Understood
Camp Jurassic and the Discovery Center are great even if you're an adult. I understand skipping kiddie rides. Ollivanders, Poseidon and Sinbad aren't really kids attractions either. I could probably spend a full day since I generally enjoy everything at IOA except Pteranodon, Seuss Trolley, Poseidon and Doom.
But keep in mind that IOA is getting ready to expand its offerings! I get how you could finish at 2.
Kong
Nighttime show
Toon Lagoon revamp/replacement
Lost Continent revamp/replacement
Seuss expansion
Potter Phase 3
JP revamp/expansion
All of those seem to be on the table for IOA over the next 10-15 years. By the MK's 50th, both Uni parks will be full day for most anyone except babies.