Car has arrived..Please Help!!

The beast is here :).. Went to see her today and found the car pretty dirty. I advised the dealer not to wash it as it is going straight to the detailer. Am pretty confused as i can't check the bodywork because of the dirt. Dealer advised to let them prepare the car which includes polish and wax. Not sure what to do now??? Will it be enough just to let them jet wash or rinse for me to inspect the car or what do i do?? Please help?? Thanks