VAT has been 'coming' for 5 years here. I remember the threads when it was last mentioned seriously and everyone was getting their knickers in a twist saying they would resign and this was the end of the world, blah blah blah.
Hotels in the UAE, and the restaurants within them already slug you with big taxes on all your purchases so I don't see the big deal. If and when it happens you do your figures and decide if it is worth staying. Until that time you just enjoy the sun and stay happy