For those from Vegas looking at these posts, the Clark County library has increased its ebook offerings. Most are in Adobe epub format and readable on the 505. I had checked two months ago and the lstings were not substantial. They must have made the commitment to increase holdings since then. Try this link.
http://ebooks.lvccld.org/C2367477-35...6/en/index.htm
You can join online but you have to visit a library to get your card. I've downloaded a couple of books and they are working fine.
Since you are visiting from the UK, and totally off topic, Vegas now has a few good pubs. McMullans on Trop next to the Orleans is my favorite. The Crown & Anchor on Trop and Maryland Parkway is one of the oldest pubs in town and they broadcast soccer and scrums live. Seems like lots of expats hang out there.