Would this place be fun for a 3 and a 4 year old? Is there enough for them to do?

Yes, most definitely

Yes. We took my 2 year old granddaughter and she loved it!

Yes they have stuff for them . Like a bubble full area where they get in an play throwing balls around

I think so..rock climbing, vr headset, jumping trampoline area, flight stimulation, bumper cars, and obstacle course..party area and food concession