New Paint-How soon can I wax?

[macx]

My future son-in-law is a school trained & GM certified body man at a dealer. I asked him what I should use on my wife's pearl paint - he said don't use wax but a synthetic like Nu Finish. I had bug droppings on it which were nearly IMPOSSIBLE to get off before I applied. It went on easy, some more drops in the same spot later that nearly FELL off - amazing stuff - REALLY slick, dirt doesn't stick hardly at all. Only had a chance for 1 coat before cold weather, still looks fabulous after lots of washing. I got it at a plain old cheapy auto parts.