I have a 2007 Toyota Camry Solara SLE 3.3 liter V-6 convertible. Bought new in October 2007, it now has just over 23000 miles on it. I have replaced top last year because rear window delaminated, and Toyota replaced the dash because of cracking four years ago. Only mechanical maintenance performed are faithful necessary oil and filter changes (with the top quality synthetic oil recommended by Toyota), new tires a few years ago because of sidewall cracking of original tires due to age, and tire rotation. I intend to keep the car as long as I can depend on it. Where shall I go next with maintenance?
Since you aren't doing many miles each year, you should probably concentrate on aging rubber parts, like the tires you replaced. I suppose you could do coolant, trans fluid and brake fluid, but I'd wait at least until 30K miles. Here's some Scotty suggestions that might apply.
https://www.youtube.com/watch?v=knFbVAOg4cA&list=PLWk1cEs9Uv2hC8aOhCJ0DvNdtRfBU76y5&index=109
Follow the owner’s manual for services. These cars are basically the V6 Camry and they tend to last very long time just with necessary maintenance.
