To each his/her own I guess.
When we saw it, it was in March, but it was fairly warm. I "persuaded" (i.e. dragged by the arms) my parent to go about 90 minutes early. Though my dad griped until the show started, as soon as it DID start, his camera was up and he didn't stop shooting (he's a photo freak, check out his site www.shuttrbill.com<--sorry, had to get that in.) My mom agreed with me that it was well worth the wait. Now granted, I had been trying to see it for 4 years, so I was definitely ready for it.
IMHO, I place it Fantasmic, Illuminations, and then Wishes. That song from Wishes gets annoying to me. I can't see Illuminations w/o crying, and not from the smoke. But I LOVED Fantasmic. The "theme song" is my ringtone. Though I don't know if I would wait that long in the cold for it.