Understandable concern but likelihood of GBS is low. Also Sporadic with a lot of other "inciting events".
Pregnant or trying to get pregnant....DON"T go.
I have 6 weeks planned for the next year and will carry DEET...

Agree that villa (or boat) owners not likely to give full refund

Wes
s/v Sea Tiger (2022 Lagoon 46)
www.BareBoatBVI.com