We are planning to snorkel at Castaway Cay and Nassau during our upcoming Disney cruise. My husband has a mustache, and always has a terrible time getting a good seal on his face mask. His snorkel time is always cut short by frustration and discomfort with the mask leaking. Does anyone know how to rectify this problem without shaving off the mustache?? I would appreciate any words of wisdom from those who have had this experience.