What opportunities exactly do you think higher end colleges re going to offer?
Better MCAT prep? Nope. MCAT prep is all on the student. Even Harvard pre-meds complain their classes do not prepare them adequately for the MCAT,
Better research opportunities? Possibly, but research is one of the lesser valued ECs for pre-med.
(See p. 14 of this annual survey of med school admission offices: https://www.aamc.org/download/462316/data/mcatguide.pdf)
Better community service opportunities? Nope. That’s on you.
Better clinical volunteering opportunities? Nope. That’s on you.
Better pre-med advising? Unlikely.(It’s mostly terrible everywhere.)