Gay couples in our age group, Jim, seem more practical about the whole proposal business (based on a small sample size, admittedly). My ex (Linda) and her wife (Carol) decided to get married on a "yep, makes sense, let's do it" basis; but Carol had done a full down-on-one-knee-while-the-restaurant-clapped with her previous spouse (or "spouse," since this was a couple/three decades ago). Which Linda pointed out also influenced the "grand proposals" for boomers and older — why risk trouble going public when it was illegal anyway, and just being out wasn't always safe?
OTOH, I read about a 30-something lesbian couple who did the big surprise public thing with a ring, and had so much fun that the other half of the couple wants to do the same thing to surprise her fiancée ("Lesbian privilege!" she said — I know, kids these days, right?). Hopefully they at least talked about it beforehand.