GoCardless is probably the best option for subs payments via direct debit. It’s also mentioned in one of the CivCom policies if you care about that. Fees are reasonable too.
Another problem with card payment systems like SumUp, particularly for canteen/NAAFI is most of them have a £1 minimum charge. Which isn’t great for Sqns who buy in bulk and sell at cost
I understand the ambition to go that way, it’s a lot more convenient for volunteers and that sometimes it feels inevitable that society will become completely cashless, however many poorer families budget using cash.
By going cashless you risk, inadvertently, excluding cadets from poorer backgrounds - particularly for things like the tuck shop.
Have you undertaken any kind of impact assessment of the idea?