ANH - I honestly don’t remember… pretty sure it was a Betamax tape at a friends house (I was a bit too young - born in 1976) to see it in the theater)
TESB - Saw in the theater with my dad, might be the first movie (was one of the first) I ever saw in a theater
ROTJ - Saw in the theater; I still remember what a huge deal it was. They were selling T-shirts and other ROTJ stuff outside the theater.
TPM - Saw it in the theater
AOTC - I think I waited for DVD (might have seen in theater but don’t remember)
ROTS - I’m pretty sure I waited for DVD (might have seen in theater but don’t remember)
I was so excited for TPM that I can remember vividly seeing it in the theater (and in fact the first viewing was pretty enjoyable; I hadn’t seen any new SW films since 1983!)… sadly the film didn’t hold up for me and I don’t really even remember the first time I saw AOTC and ROTS (pretty sure it was on DVD, but I might have gone to the theater for AOTC).
TFA - Saw in the theater with my oldest daughter in her Rey T-shirt (She was 6). Awesome experience.
Rogue One - Saw it in the theater with both my daughters (7 and 4). My 4 year old actually sat through the whole thing and my 7 year old loved it. Another awesome experience (there’s nothing like seeing a new SW film with your kid; the excitement and wonder is contagious)