I think you misunderstood me. What I meant was, if the park closes at 10pm, some staff could potentially be working until 12pm. I remember when we had 10pm closes, and Megastore was still heaving at 11pm. I didn't get out until 1am. Luckily I lived locally and had understanding parents. If I lived in London or relied on public transport to get home, not sure I would have many options open to me.
Regarding mazes, I think its a tricky one. Do you go down the conga line route (Universal), increasing throughputs, or just add more of them? If the park is struggling with capacity, I should imagine it would need to change it up a bit over the coming years, especially with Hyperia on the way.