I did one as a kid the year they set sail with the Magic... but in my adult years we did Alaska in 2012, Eastbound Transatlantic May 2015, a short 4 day with my cousin last month (In a Royal Suite!) and a couple of days ago I booked a 10 day that goes into Russia and Finland in 2017. Hoping we can squeeze the Westbound Panama Canal in in August but I don't think my husband's schedule will allow it.
FWIW we don't have kids. We did Alaska with my parents and some family friends who had a 2 year old at the time (all seperate staterooms), same with EBTA (she was 4 then). But for the most part we were kid-free and had a BLAST. They used to let you bring on as much alcohol as you could carry so that was awesome, but I hear they've tightened up the policies on that