It's cheaper when you buy day passes in advance. I haven't been on the Fantasy, but I have been on the Dream. My favorite part of and of the rainforest rooms are the stone loungers. I prefer the ones on the Classic ships (Wonder and Magic) because the whole thing is heated stone, not just an insert down the middle like those on the Dream (and I'm assuming Fantasy). But, there are more of them on the bigger ships (like 6 or 8 as opposed to four). The overall ambiance of the Dream class rainforest rooms are, to me, brighter and more open, where the ones on the Classics are darker and more peaceful. When you're on the loungers on the Dream class ships, you're overlooking the hot tub, which is in an enclosed area with windows looking over the sea. It's bright and kind of loud if people are going to and from the hot tub. The loungers on Classics are in a smaller space with a central fountain. You can actually nap, it's so peaceful. I also prefer the steam rooms on the Classics more... again, fully heated tiles. The showers in the rainforest rooms on Dream class ship are nicer, though... more options and more showers.
