Honestly, I think too emphasis has been put on Day Tickets but losing site of the bigger picture.
First of, its my belief that although the park will have a Grand Opening June 7th 2025, to which they can book the talent (Spielberg et al) to visit just like they did back in the day. BUT if they can get this park opened earlier unofficially, they absolutely will. They can call it technical rehearsals to cover their ass if stuff is not working as it should just like they did successfully with VC. Im sure ideally they would like this park to be generating money as soon as possible in 2025.
If they can get the park open from April 21st 2025 to AP previews, im sure they will.
Brits can ONLY buy multi-park tickets, our ticket is 14 days USF/IOA/VB currently costs around £360, we came to the conclusion that adding Epic would bring the cost up to around £450 (Disney 4 park, water park 14 day tickets are £610 each).
My point is they will absolutely have guests with multi-park tickets who have booked a vacation to experience EU they MUST cater to, and honestly it benefits them to have people staying on resort as they spend way more money.
Selling only Day tickets at the beginning freezes out those guests from getting in the park, IOA and USF have max capacities of 42K each, but Epic is likely to be slightly higher maybe 50-60K. Perhaps they cap the total sales for 3 (+VB) parks at 85K per day. If locals have had a month or more to get into the park the pile on everyone worries about doesn't necessarily happen and guests comflortably float between three parks plus VB. Maybe theres a limited number of door tickets available who know
Also, I dont think the Open Hub in at night thing is viable other than maybe letting Helios guests walk from the security gate directly into BlueDragon and back. theres only few thousand people staying there, and most hub places arent full sit downs