Multiple answers:
Used bookstores: Still go a lot. Even a bit more recently, since I have started using 1dollarscan and bookscanUS to scan backlist books that aren't (and probably never will be) available in e-book. So, in cases where I can't bear to part with my copy, I'm buying duplicates to send to be scanned.
DTB bookstore to buy a book: Twice in the last year, to buy study workbooks for my son - oh, the joys of having a high-school senior
! It's still a bit hard to do workbooks on an e-reader, IMO, although I'm sure others will disagree. Other than that, it's e-book only.
DTB bookstore to buy other stuff: After several years of barely visiting our local B&N B&M store, I now go fairly often because I like their selection of gifts and games. And, I've visited to look at Nook covers and accessories. So, with me, at least, their strategy of trying to re-invent their B&M stores as gift/bookstores is working. And, I'm signed up for B&N Buzz, which periodically sends me little discount codes for the stores, and combined with my B&N credit card, can make their gifts fairly reasonably priced. I've also used the read-for-free to sample some books on my Nook while indulging at their cafe. I don't know if their shift will be enough to save any of their B&M stores, but it sort of works for me.