@chitownproud, we asked the question re: research opportunities for non-STRIDE scholars at a recent Smith info session and were told that all students would have access to research opportunities. I think the difference is that if you are STRIDE it is a ready-made opportunity whereas otherwise you have to take more initiative. Also, you wouldn’t start first semester.
Good luck with your decision. My D was also accepted to BM and Smith, as well as Mt. Holyoke which has offered her a large merit award. She likes all of them very much but all things being equal is leaning to MHC.