East Brunswick, NJ store was very helpful.
Different layout than I'm used to, guy directed me to the shelf and got one down. Then I said "hmm I'll use one from work one from home, gimme another one", he laughed and got it out. I actually set the second one down and came back for it, being careful.
Girl at register was very pleasant, rang it up with coupon with no qualms. When I said I'd be back in a minute with another one, she said "you don't have to take the first one out to your car, leave it here with me and get the other one." Done, and done.
I had 2 copies of the coupon printed out, but I wouldn't have needed them.
A rare low hassle episode at Best Buy.