i think aerials are a great add-on for a successful wedding videographer or photographer, it's a different way to catch views of the day plus it adds a little excitement to the event having the heli in the air at times.
welcome to the site Oceanne, have a look around and make yourself at home.
affordable, durable, service in Dubai....not sure where to begin with those questions. I'd suggest you browse the threads in the beginner area first.
have you ever flown anything radio controlled? have any hobby type building skills? ever solder two wires together?
if the answers are no, no, no then you might want to consider learning or just going the ready-to-fly route, there are a lot of options.
Bart