When I was flying out of Gillespie field in San Diego (KSEE) and took a trip upto John Wanye Orange County it took me thru the San Onofore MOA which is beside Camp Pendelton of the USMC.I had VFR flight following and so was in contact with SOCALL APP all the time.Obviously checked the NOTAMS beforehand then half way thru I got calle dup by SOCAL telling me the MOA was going "HOT" and was advised I was within my rights to continue through the MOA.However I chose the option to scarper and headed further out to sea to leave the MOA.
As for the other MOA's I've been thru the ones to the EAST of san Deigo near Thermal andPalm Springs.From memory I never seem to recall having to get permission to fly through them.
Regards Enjoy your flying.