They do have high chairs. Our son was 15 months when we were on the cruise in Nov. 01 and his sleep times were thrown out of wack. So, he decided to sleep when we were at dinner. Like I said above, we had a corner table in all the dinning rooms. When he wanted to sleep we would put the stroller between us and the wall and allow him to sleep. We never impeded any movement of the CM or the other guests. When he was awake he sat in the high chair and we would move the stroller out of the dining room.