Does it really work with no signal on the water?
Yes. Bookings, payments and clock-ins write to a durable queue on the device and sync the moment you reconnect — with idempotency keys so nothing is ever charged or booked twice.
Are we compliant with Greek myDATA / AADE?
Every paid transaction files a signed InvoicesDoc to myDATA automatically, with year-aware numbering and automatic credit notes on refunds. You connect your own AADE keys and keep a fiscal toggle for sandbox testing.
Do I need to buy radios for my instructors?
No. The live radio runs inside the Team app over the phones your crew already carry — one channel per business, push-to-talk, and it even wakes a locked iPhone so urgent calls get through.
How long does it take to get going?
Most windsurf centers are taking live bookings within a day. Create your business, add services and team, connect your payment keys, and print the guest QR for your shop — that's it.
What about card fees?
You bring your own Viva Wallet account, so card processing rates stay between you and Viva. Lagoun never sits in the middle of your money.