We did the River Belle (regular) Fantasmic package, *not* the premium dining, near the end of last month. Whatever time they told us to start lining up, we got to the line maybe 20 minutes before that, and were maybe 10th in line? Quite honestly, maybe even closer than that. Plenty of the people showed up at the allotted time, and they were only 2 or 3 people-rows back. We made sure to keep our group of 3 (grandpa, grandma and 7yo grandkid) in a small triangle-- kid right in front between hubs and I-- so that other kids could get up next to the railing as well with parents in close reach. Everyone in front sits. No strollers. As more people come, they (CMs) just kind of continually shove people to the front railing as more people come into the "holding cell," LOL. I assume the people in the back of the pen stand, but I have no idea because we have gotten there early each time.
Since we arrive early, we always make sure to have some sort of entertainment for the kids-- Heads Up on the phone, or a dry erase activity book, etc. But the 3 kids that we have taken were all enamored with just looking all around and all the hustle and bustle!