My very selective school ostensibly requires the classic premed courses. 4 sciences + labs and English. I have taken a grand total of 2 labs ever (not exaggerating). No physics, gen chem or bio labs. This was a deliberate choice I made due to what I'd read on SDN (thanks!) I have had no complaints with upcoming enrollment. Neither do I feel I would have at the other schools that accepted me (maybe the SUNY). If you look at my app/ECs you'll see I am the opposite of cookie cutter. So the system benefits those like me very greatly
In my experience, the public schools tend to be more rigid in requiring coursework to be complete before enrollment. My ex-girlfriend is making up 2 classes and a lab this summer bc her UC is making her do so. I've known others with this problem, but never at private schools, much less the very selective ones.