More than anything, I'd like to just get my number in the waiting-list, and if possible, how many rooms were opened up last year. If I'm nr 400 on the list, I'm not even gonna wait, and just book somewhere else right now. If I'm nr 4 on the list, I'm gonna wait. However, with no information at all, I can't make an informed choice.
As for the future, perhaps prioritize 2+ reservations over single rooms?
Depending on exactly what happened this year, it may be appropriate to lock out the single option completely. At least until the Estrel Tower comes on line in two years time - hopefully in time for EF24.
2000 people is a lot, but it's only about 80% of the hotel's capacity. (2*1125 + third beds) This does look like a situation that could at least be mitigated for next year.
[edit:]
My booking number was 1760838. If Lizeron got number 1759392 then that's at least 1200 inquiries that the hotel received.