I would think that the parks hours would have some impact on your enjoyment. If the park closes at, say 7, the E-night goes until 10 pm. I would imagine that a lot more people would stay for those particular hours. But, if the park closed at 10 and E-night lasted until 1 am, then surely not nearly as many people would participate. We did an E-night in August. The last one that was offered in August if I remember correctly. THe park closed at 7 and quite a few people were there for the E-night. And it was a horrible night weather-wise. Quite rainy which I'm sure held the numbers down a little. But there were still a fair amount of people there.