I am trying to work out some plans for day trips from Ubud and am considering a trip which includes the treetops adventure park. My concern is that our youngest is only 3 and from the website it seems you need to be at least 4 to do even the easiest route. My boys (6 & 9) would love it as would their dad. Is there anything to do at the park if you are not able to do the circuits? Also do you have to pay if you don't do the circuits. How long would it take to enjoy some time there as although I would be happy to entertain my 3 year old whilst the others are climbing, I'm sure I'd get a bit edgy and bored if it takes hours. What other things could we include on a day trip to Ubud including Treetops keeping in mind we need to keep the kids happy?