A bit more for your paranoia.
If you would be concerned to receive a call from your chosen WG out of the blue e.g. wife alert, then get a punting phone that you only turn on when punting and that you can stash away somewhere. It is very rare in my experience for a WG to call/text but if they are having a quiet time they just might send out texts...
I'm sure there's a post or two on precautions to take apart from the obvious one = condom
It's highly unlikely you will have any trouble, so make a booking and enjoy.
Good advice for the married man, not sure if the OP relationship status has been established.
