Hi there
I'm really sorry for not replying to this sooner. I've had problems accessing FT - I'm not sure if anyone else has had the same issues? I am currently getting through all of your PMs so apologies for the delay with these.
guv1976 - domestic US first-class award is definetly charged at 75,000 miles.
There is no limit to the number of stopovers per se, but you stopovers must be at connecting points on the most direct routes between the origin and destination.
I hope this answers your questions but let me know if not and I'll be happy to clarify.
Best regards
Nicci