Mobile bidding at charity galas: how to plan event WiFi and payments for the auction

What does mobile bidding do to the network during the night?

A gala with mobile bidding does not load the network evenly. It moves through distinct phases, and the busiest one is usually the last few minutes of the silent auction.

Design for the closing countdown and the checkout, not for the average across the night. A network that feels fine during entrees can stall in exactly the minutes that decide the auction result.

How many access points does a gala ballroom need?

In a ballroom, the number of devices decides the access point count more than the floor area. Our working figures are about one device per guest at a public or social event, 1.5 to 2 devices per staff member or volunteer, and about 50 active devices per access point.

One access point can cover roughly 900 square metres of open space, so coverage alone would suggest far fewer. Spreading more access points across the room keeps each one below its comfortable device count when everyone bids at once.

• Mount access points high and away from stage drapes, metal truss and catering stations.
• Spread them across the tables, not clustered near the stage, so the far tables are not left on one overloaded unit.
• Cable them back to the network rather than relying on wireless hops. Our guide on how many access points you need covers the method in more detail.

How should the network be split for bidding, payments and AV?

Separate networks stop one busy group of devices from slowing another. For a gala, four is a sensible starting point:

1. Guest bidding network for phones. This is the busiest and least predictable.
2. Payments network for card terminals at checkout, ideally wired or on a dedicated wireless network with its own priority.
3. AV and screens for leaderboard displays, presentation laptops and any live stream, preferably wired.
4. Staff and volunteers for registration tablets, the auction desk and the event team.

Our guide to separate networks for events explains why this matters, and the EFTPOS payment networks service covers how terminals are kept clear of guest traffic. If the appeal or auction is streamed to remote supporters, plan 10 to 20 Mbps of steady upload per stream with 1.5 to 2 times headroom.

How do you get hundreds of guests connected quickly?

The bidding platform only works if guests can reach it, and many function rooms have weak mobile reception, especially in basements and older buildings. Make joining the WiFi the easiest part of the night.

• Put a WiFi QR code on every table card next to the bidding link, so guests scan once to join and once to bid.
• Use one clear network name for guests and keep the password short but not obvious. The Australian Signals Directorate's ACSC recommends WPA3 encryption, falling back to WPA3 transition mode or WPA2 for devices that cannot use it.
• Avoid extra sign-in pages on the guest network. Each extra step loses people, and some pages interfere with apps that open in the background.
• Test the bidding platform on the guest network before doors, including registration, placing a bid and receiving a notification.
• Brief the MC and volunteers on what to say if someone cannot connect, and keep a spare tablet at the auction desk for guests without a working phone.

Our guest WiFi page covers onboarding options for different event types.

What should happen at checkout and with the money?

Checkout is where a slow network costs the charity most, because winners who wait too long sometimes leave without paying.

• Keep terminals off the guest network. Use the payments network, and give each terminal a backup path so a single outage does not stop the queue.
• Stagger the close of silent auction sections if the room is large, so checkout does not start for every winner at once.
• Test a real transaction on each terminal at the venue before guests arrive.

Fundraising rules also apply. In NSW, people and organisations running a fundraising appeal for charitable purposes generally need an authority to fundraise from NSW Fair Trading, unless exempt, and a charity registered with the ACNC that notifies its intention to fundraise in NSW gains a deemed authority. The NSW Government's event guidance also lists conditions such as telling the public the purpose of the fundraising and banking all money raised. Check the current requirements for your organisation before the night.

What should be on the gala checklist for the week before?

1. Confirm the guest and staff numbers and the run sheet, especially when the silent auction closes.
2. Get the floor plan with table layout, stage, AV desk, registration and checkout positions.
3. Ask the venue about its internet line, wired ports and whether other functions share it on the night.
4. Confirm the bidding platform's requirements and test links.
5. Plan four networks and label which devices go on each.
6. Schedule a walk-through test once tables are set, with phones bidding from the far corners.

If you are planning a charity gala or awards night, you can send us the floor plan and run sheet and we will come back with a network plan sized for the closing rush. See also our pages on charity and fundraising event WiFi and awards night and gala WiFi.

Sources

1. NSW Government: Authority to fundraise in NSW
2. NSW Government Event Starter Guide: Fundraising for your public and outdoor event
3. Australian Cyber Security Centre: Secure your Wi-Fi and router

Event dates, prices and product details can change. Check the organiser or manufacturer before you plan around them. Planning figures are starting points; every network is confirmed against the actual site.