Well the major pluses are that its near Europe for those short holiday breaks,the food selection is pretty good and Dubai is one of the easier places to get a beer although you have to go into a hotel or a restaurant with a hotel somewhere close by.The wages are ok obviously the tax free situation helps a lot for those used to the UK situation.The clubs, bars and general night-life are not as good as Asia but its ok for a while.The cost of living is quite high as there is a shortage of rental accommodation available particularly in Dubai and Abu Dhabi.Most work sectors are booming particularly in construction industry and IT.
A couple of the minus points are you get fed up with it being 40-47DegC everyday and sunny but the winters are good and probably the best time to arrive for a newcomer,public holidays are almost non existent consisting generally of four actual work days a year the rest seem to always occur on a weekend here so its important to make sure you get a decent annual leave allowance not the usual 30 calendar days contract which works out about 21 working days.The other thing is if there is a wife/girlfriend moving as well they usually either love or hate the place if they are used to having a good job they will find it very difficult to find something either at the same level or with reasonable pay unfortunately they are not expected to want to work,some ladies in upper management are ok here running their own companies or have been transferred from elsewhere with their company but it can be boring for them if they cant find something suitable.
Obviously the best way to give it a go is if you can come out on a trial run for a couple of months if that's possible first.