Had an 01 Accord 2.3 I4, ran the first 50,000 or so miles with 3750 oil changes on conventional Penz and some Quaker state in the winter when I was too lazy to change it myself. The last 60,000 miles with 5000, then 7500 mile changes with mostly Platinum. All 5w20. Engine still ran like new, but I needed four doors.
3000 miles? In any of those cars, no sweat. The Camry should be 5000, I have the same 2.4 in an 04 Highlander and I go 7500 on Platinum (but I use 5w-30, may use 5w-20 next winter). I don't have anything similar to your other cars, but I'm sure they're up for more than 3 grand, if you're into it.