When you order a book that is not a Wish List book, how long does the member have to accept the order before it passes on to the next person in the FIFO?  I requested a book on the 11th and the member still has not accepted the request.

The time limit is five full days, which ends up being a few hours longer than five days.  The potential sender will have the 12th, 13th, 14th, 15th and 16th to respond.  Your book will time out and move on to the next person at the end of the day on the 16th (really, the 17th, at around 3 a.m. eastern).

Thanks!  That's what I thought, but wasn't sure.  I knew when I was offered a wishlist book I had 5 days to accept, but wasn't sure how it worked when I was on the other end of a non-WL book.

When you're the potential Requester of a WL book you only have 2 full days to request or decline, but once that's done the Sender still has 5 full days to accept the request, WL or not.