Pre-tan prior to the trip, or use sunscreen like you would on your lips and face. My wife and I have never noticed any extra burn when treating exposed areas, but even if it did, it will be better than the sun burn that could occur. We both shave and never experienced any extra burn down there.
2012: Apr 22-29 Couples Tower Isle; Jul 21-28 HBR
PAST TRIPS:CouplesOR-Feb '95, Jun '97, Jan '00,01
HedoIII-Jul '03,04,05 GLB-Jul 06,07,08,09 Starfish-Jun 07,08
Rose Hall-Jun '08,09 GLN-Jun '09 Breezes Rio Bueno-Feb '10
Dreams RC & PA-Jun '10 Now Jade-Apr '11 El Dorado/HBR-Jul '10,'11