Who pays for bridal party hotel rooms?

If you offer, you pay. But if they know it was out of state, they probably budgeted for rooms themselves. I wouldn't say anything unless they ask for recommendations.

I have always paid for my own room as a bridesmaid. If you want a suite, or get ready room if it is not included in your venue, you pay for that. If you want them to stay, and are "requiring it" (if they would not be traveling and would not have to stay over anyway) I would advise you pay if you can. If I didn't HAVE to stay, I sure wouldn't shell out for a hotel room, like if I were local