We did the Glass Bottom Boat excursion this past November when we were on the 4 day Wonder. We were very disappointed. You had to stand the entire time, and the glass bottom was not very clear. We were unaware of the standing part and I had taken a senior with me who if they had known they would have to stand, would not have gone on it. I do think that the standing part does need to be mentioned on the description of the excursion. It took about 20 minutes to get to where they stop to show you the fish, coral etc and you stay about 20 minutes and then 20 minutes back. I know it says 1 1/2 hours but ours was 1 hour. The best part of this excursion for us was a little boy about 6 or 7 that was beside us that wanted to see a shark, so we spent a lot of time "helping" him try to find a shark. We didn't find one but it sure made the trip more fun. So for our $50 (2 @ $25) we saw 3 types of fish, and some coral. This type of excursion might interest you but for us, we felt it was a waste of $50.