Familyof14, when you call Loew's directly, their policy is "18 and under are considered children". I had explained to them that my son had turned 18 in Nov. and for this July's ressie they said he would still be considered a child. I ended up calling them directly because of the online child category only going up to 17. We stayed up in Philly for NYE and they used the same policy of not charging our son as an adult. There will only be 4 of us in the room but if I wanted a rollaway for one of my sons, it would be $25 per night for it. Luckily, my 15 yr. old found his twin airbed comfortable enough last year to use again this time.