I'm driving about 3 hours away and only staying for 1 night. I'll probably bring some Eco WW and MF towels to get the bugs off.
I wouldn't do much more for a 2 week vacation. Maybe some glass cleaner, Bug Squash and a 2 oz container of sealant/spray wax (to keep the bug splatter areas covered).
I would never consider bringing wheel cleaners or a set up to do a full wash. My wife would kill me.