Here is a list of a few cool Guest buildings
Book store.
Jewelry store.
Laser Tag.
Ice skating rink.
Figurine store.
Auto souvenir shop
50s Diner .
Fragrence shop.
Tattoo parlour.
I'll list the rest later.
Hmm... some good ideas here... some are just weird though...
Book Store -------- interesting... although a store dedicated to science in general might be better; sell books, models, science gear, and such...
Jewelry Store ----- pretty sure they had one of these in the movie... and in major real-world theme parks like Disney World.
Laser Tag ---------- we could use some more "normal" attractions... but a laser tag building? Well... there is a bowling alley I suppose...
Ice skating rink --- on a tropical island?
Auto shop ---------- I can't imagine why they'd need to dedicate a whole shop to souvenirs for your car...
50's Diner ---------- more restaurants would be great and a themed restaurant could be fun...
Fragrance shop -- I can't see them putting one of these in a zoo... the smells might bother the animals...
Tattoo parlor ------ Why would they need one of these? It's a very niche product...
Personally I'd love to see:
Simple rides, like a Carousel or maybe a Ferris Wheel...
I-Max movie theater (like the one in the movie).
Paleo Garden or Greenhouse (guests walk through and view prehistoric plants).
Candy Shop (buy candy, ice cream, cookies, fudge, and so on...)
Art Store (paintings, sculptures, carvings; all dinosaur-based).
Swimming pool (to go with our hotels).
They also need small kiosks and stands:
Face-Painting (for the kids)
Popcorn Stand
Balloon Stand
Information Desk (gets maps and directions)