Give guests written terms, secure payment options and a clear record of their booking. Keep availability consistent across channels. Do not collect card details yourself or ask guests to send them by email.
One practical next step.
Test confirmation, cancellation and payment failure as carefully as a successful booking.
This information reflects my experience and my understanding of published guidance. It is provided for general information only and should not be treated as legal, tax, planning or financial advice. Regulations can change, so always check the current official guidance.