We're supposed to go on Sunday, but the weather isn't looking too crash hot. 40% chance of rain. If it is raining, will it ruin all the fun, or is there plenty of things to do that are under cover?
Most of the good stuff is indoors -- but they do have an outdoor speedboat show, I think, and something with some animals, as I recall. The tram ride, which is great fun, would be somewhat dampened by heavy rain (
), but a shower or two would be no problem.
There's a lot of walking, but you're always within a few steps of someplace to get indoors easily. I say go!