Depends what time you go, we usually go right after school & there is plenty of room for everyone
Yes but if its crowded there's a little kid area in the very back
They have a section for the younger kids so they don't get trampled by the bigger kids. There is a height requirement for the section for younger kids. I think if your 3 year old can jump easily with their cousins, they can be with them in the bigger sections. My suggestion would be to go during hours they aren't too busy. That way there's less kids and more likely than not they should be able to jump together because it won't be overcrowded for your little one to get hurt.
The 8 and 12 yr olds could jump with your 3 yr old in the section they have for younger kids or i believe that if your 3 yr old is tall enough they might be able to jump in the area for older kid's.
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