Do you think a two day pass is needed or is one day enough to see everything?

1 day pass is enough to visit legoland and sealife. If you want to go to water park also, in that case 2 day pass is required. I would also recommend buying "reserve and ride " pass. Kind of a fast pass so that you don't wait in the long queue

1 day pass is enough

1 day pass was great for kids age 8, 11, 13. We saw everything, rode all the bigger rides in about 6 hours at the park on a not-too-busy day.

One day is enough time If your child is under 42 inches (it maybe 48 I believe it's 42) because he won't be able to get on all the rides two days definitely if you live far and they got a sweet aquarium

2 days. We did one and we didn't have enough time for everything. Next time, we want to do one day for just rides, and one day to look around, take pictures, shop, and build stuff.

We have a 4 year old son a 7 year old daughter and a 9 year old daughter and a 1 day pass was enough. We did not do the water park however.

That is what i would like to know my self. Because I'm planning on taking my kids in the summer time.