bikini waxing before wedding??

i dont know if it is available in pakistan or not.but i will definately look it up.i guess we all get used to the pain after some time.but i guess its better to get it done from someone for the first time. but tell me how long does your wax last.i mean after how long do u ppl rewax?
and tell me about electric shavers like braun silkpil or anyother are they worth it for legs and arms?