You should wait at least 90 days or longer depending what part of he country.
With all due respect to some fine people here and great painters I strongly feel they are mistaken on not needing wax. Every weekend I have people tell me the same thing at shows....and evey weekend I can show them paint that is breaking down due to UV lighting.
Wax will give you protection from UV lighting and even urethanes will break down after time in the sun.
For you guys who like Meguairs ....try the last touch....it is far better than final inspection