Or, consider a sober cruise so you can cruise with a group of nondrinkers who will join you in alcohol-free fun. The alcohol-free vacation trend has gained momentum over the last few years. As a result, cruise lines have upgraded their zero-proof offerings with designated mocktail menus and nonalcoholic cocktails included on traditional drink menus. Zero @ Sea cocktails are available fleetwide in all bars and lounges aboard the ships.…