I thought the first Aladdin show was the way to go. I got in line around noon for the 12:30 show, and they let us in about 12:15 or 12:20pm
When the show let out, there was a huge line waiting outside the 'doors' to
the waiting area. Snow White waiting was similar in scope for when I wait
for the "Festival of the Lion King" at AK. I think I got in line about 20 minutes
before that one.
In terms of enjoyment (relating to WDW shows), I compare Snow White
to the Beauty and the Beast show at MGM (good, but I don't think I'd want
to keep going back to it).
I compare Aladdin to the former Hunchback of Notre Dame show (R.I.P.) at
MGM. Both were terrific productions, IMHO, and I always went back to
Hunchback. I went back to Aladdin when I went to DL/DCA for the 50th.
Snow White: mediocre for me
Aladdin: Well worth repeating