Thumrait used to be ok if you liked the company of men exclusively and shop talk in the bar. I think Seeb would be ok as Mucat is a bit more of a normal town, I did a little stint with them in UAE between leaving the mob and getting my license.
It was ok - I think the money may have improved. accommodation was local apartments of decent standard.
My experience is 11 years old now so maybe someone more recent can chip in.