Yesterday made it a week since I last applied the Ultimate FF. I was able to give the car a full wash and dried it with no drying aid with no issues. The water beading was the same as it was during the rains two days after application and in the intervening days, there were a couple hundred miles of dusty road construction driving, and general construction behind the house, PLUS the trees in the area have been dumping pollen like it's going out of style ... so much so, my black paint looked like it had a LOT of gold metal flake.
Any water spotting from where the water dried before I could get to it wiped off easily with a damp microfiber cloth. The finish still felt very smooth, but not very slick (with a damp MF, I didn't try it with a dry one or a terry cloth towel which shows slickness better than MF).
Ultimate FF seems to also be an excellent self-cleaning sealant/wax/coating - whatever it is and the rains washed off all of the dust and pollen that had accumulated prior and hosing off the car before the wash got rid of all the newly accumulated dust & pollen, too after being driven in the rain, there were no "spray pattern" marks behind the tires and very little dirt on the sides of the car.
So far, I'm impressed with Fast Finish.