Hi Ben, Thank You for taking the trouble to post this. I had previously seen Adele multiple times during 2014, at was what I thought at the time 'the peak' of her popularity.
Adele has since, justifiably in my mind, become
HORRIFICALLY popular since then. It has been a long time since I've seen her now for several reasons, however I am coming around to see her again during 2015, so your review based on the booking conditions at the moment is very useful to me.
That being said, Adele4u is one of my top recommendations for a first punt, so I personally would try again (having had previous experience with polite, relatively quick (within 24 hours), and efficient comms. That being said, many of my meets with her did not require an AW booking though this may have been because I was seen as reliable.
For a first-time punter looking for Vanilla \ GFE, I can wholeheartedly recommend
Lilyhart as an alternative (please see my review), although I've only seen her the once, booking was quick and polite, however I do not know how difficult it is to book her these days so YMMV.
I wish you the best of luck!