As a light retelling of the story it fails in comparison to the Richard Lester 1973 version. It is a bit long but Lana Turner enjoys herself and Vincent Price who does these kind of films in his sleep adds much needed interest to the characters.
Wouldn't have minded seeing a bit more of Jonathan Pryce but overall the characters were thin and uninteresting and the performances particularly from Pacino too hysterical.
A condensing of the story telling may have helped – it may have had a sheik too many & the love interest wasn't really needed. Pattinson didn't look anything like Peter O'Toole. The saving grace was the gorgeous photography especially of the deserts.