Went on one in Australia. 2 nights 3 days with 50 people, most strangers. breakfast lunch and dinner all included (and tasty too) plus a berth obviously. Snorkeling and diving in the reef below, trip out to the nearby beach, tanning on the deck while moored until a beautiful sunset evening, and parties both nights with BYOB alcohol and lots of lovely conversation. it’s about $400. i love this idea of a cruise for young people. since when did we decide they were only for retirees?