I agree GAP coverage is included. You don't need the excess wear and tear unless you tend to beat up your cars. My strategy with tires is at some point while the tires still have enough tread to meet the return requirements (5/32 I think) take the best two off, keep them, and put two new ones on the front that match the OEM tires. The other pair won't wear much on the rear wheels. At lease return time the new pair will still have enough tread, the other pair won't, and then you replace those with the two you took off. So you spend maybe $450 for the two tires and installation. I drive a Clarity FC and project the OEM tires are good for 45 or 50k.
Congratulations on choosing the Clarity FCEV. I've got 28k on mine and it's my favorite of the many cars I've owned. It looks like the hydrogen supply issues are finally getting resolved. Happy to answer any questions you may have about it.
2017 Honda Clarity Fuel Cell, Black Crystal
2018 Chevrolet Volt Premier, Green Mist
2010 Toyota Prius II, Pearl White (currently in New York with my daughter for college)