If guy want to keep your car beautiful, a car cover will deal with bird poop, UV and sap from tree. If it’s onlt in and off once a week, the extra 10 minutes might be worth it.
Salt is beastly. But we lived about 4 blocks from the Pacific in SoCal with at least one car on the street, including a 1996 Chrsysler town and Clubtry) and rust from st was never an issue. The advice about washing the undercarriage is great—if you’re driving in the beach at low tide! In Texas coastal areas, critical! But nothing to worry about in ™️ your situation.
We have a 2017 Gas Pacifica and have left it undriven for a month with no issues st all. If you’re on a trickle charge under the tree, you shouldn’t have any either. And if you’re actually driving it once a week, no issues at all.
In fact, we’ve had a dedicated sports/camping vehicle of one mind je another parked in the atreeet over the last 35 years, driven once a week like you except during the winter when it might sutvfur a month or more. With a windshield facing southeast, a small solar trickle charger did the trick. We didn’t wash it at all out of season, (Town and Country, Suburban, then Sprinter). A spring wash and wax kept them looking just great, with more frequent washes (to taste) during the active seasons and another wash/wax in the fall.
At the same time, we kept my wife’s VW GLI in the driveway. When we traveled in the other rig for months, I’d wash and then cover it. At 11 years old, many people comment that it still looks new! And it’s black paint!
If you don’t want to do the cover, a ceramic wrap as suggested puts a physical clear coat on top of your paint’s clear coat. But you’re going to see all the stuff on it, so how often you wash is up to your sensibilities.
So it really depends on you. Bird poop and sap really will “get” your clear coat, so if you can avoid the tree, it would be better.
If you want to keep your paint looking great, ceramic and/or car cover would be the way to go.
Or you could do the Honda thing and not worry about it!