nakayu wrote:Thanks guys! 
I have few more questions.
What is the best way to go to Petra from Amman? and When should be the best time to visit?
There are several option reach there from Amman. You can take a minibus from Wadabat bus station in Amman that it costs about 3 JD with out extra charge for your luggage.
Another option is hiring a private taxi.
But I think the best way to reach there is by private car.

It's gonna be fun!!! and there are many car rent office in Amman.