I have been on 2 Halloween on the High Seas sailings, once we were onboard (the Magic) for Halloween day and the other (the Wonder) we were on earlier in the month. There is a specific night for "trick or treating" but my 3 kids (ages 5-10) thought it was lame. It is so crowded that you could barely walk around, let alone see the tables that were set up as stations. When you did find a table, it was just that - a table to grab candy from. They felt like it didn't compare with trick or treating at home, so I don't think we will be onboard for the actual day anymore.