Will it be open on the 27th to the 29 its my son's birthday and i have never taken him here and would like to take him and his friend and brother & sister's and would like to know how much for kids and how old do you have to pay and for adults

it will be open

It's definitely open. The prices depend on your ZIP code because if you are a resident of Fontana you pay less and if you are non-resident you pay more so that is something you should look up on the website. You might also consider renting a cabana for the day, they come out really great prices usually I think around $65 for the day and you get water for everyone and basically room service at a waterpark so it really is worth it.

Yes it is!