星加坡去Legoland (包車去) 大約要幾耐? --> around 1 hour if no traffic
在Legoland 大約玩幾耐? Last dec (31 dec 2015 and 1 Jan 2016) i went there and there seems no people go, but it was raining, and maybe this is the reason for less people. I think about 4 hours is enough for the theme park if there is no queue like last time i went.
But i think water park is more fun, why don't you go to the water park as well?