The answers u will get for a general question will be general:)
Now if you could ask more focused questions like problem with accomodation, salary package, expenses, traveling around dubai it would make more sense, based on your question one could write a thesis
A few that i can see
1. If your company doesnt provide you with an accomodation that will be a major issue.
2. Are you moving with your family, i mean wife , children? If yes is your salary commensurate to take care of their education and expenses.
3. Currently one of the major problems we face is traveling, driving in Dubai at times can make you loose your cool the way the traffic moves and people drive.
4. REst all depends on the kind of lifestyle you lead.
Cheers,
J