hi,
Went to Jordan earlier in the year. Couple of tips take sturdy footwear for Petra, as there are some very dodgy areas under your feet. Be prepared for all the people there trying to sell things, it is mega annoying, but dont make eye contact and they will leave you alone, unless of course you want to buy. A lot of children selling as school is not compulsory, so found that quite hard as some are very young.
Finally, take a plug for the bath as hotels in Jordan do not have them!