Every 7500 miles is valves and oil change. Every 15000 miles is belts and valves and oil. The stupid wrench icon only goes on after it flips past 7500 mile intervals and can't be pre canceled. Learn to ignore it, I have. The belt thing is up to you. Replacing timing belts every 2 years seems a bit stupid to me. I replace them every second valve adjustment. I've had my 696 10 years and had the belts replaced at 24000 km and will have them replaced at 48000 km this spring/summer. If i did it to the letter I would have had to replaced those belts 4 times all ready. A bit of overkill I think. The belts are thick and strong. In a car you replace belts every 100,000 km and they are the same thing.
I would however have a mechanic give everything an inspection and you can lube every thing and change oil and bleed out all the fluids as the clutch slave and brakes can be fussy if they get old or watery fluid in them. I change oil every spring and bleed fluids and lube everything for the riding season. Chains need oiled often and need to be watched closely and changed every couple of years. Sprockets seem to go out after every second chain change. Clean out your fork seals every once and a while using a seal mate and keep it on a battery tender when not in use. Works for me since 2008.
Just my 2 cents
Your 2 cents won't help him much if you're wrong.
When a belt fails, you'll think that the replacement schedule cost was cheap.
I've stretched it myself, and not been bitten. I've seen it go the other way.
I'd never advise anyone to stretch the interval.