Child's Birthday Party Location Advice

I'll be having my childs first birthday in Miami. We are visiting from out of state. I'm trying to find affordable options. I've checked out renting a shelter near the beach but it's appears to be almost $300. I don't mind paying for a venue but $300 is out of my budget. Also if anyone knows a good place to get a smash cake for the party that would be helpful too. If we can't find a local bakery to support we are just going to use Walmart or Publix.