Thats actually a possibility.
Unless of course the Japanese sense of honor and commitment to their job wins over and those poor folks will pull an allnighter to get the game going.... as someone who was forced this week to pull a 34 hours long day with two work shifts - 12 h at the start and 12 end of it (ugh dont even wanna remember that), I feel quite sympathetic towards them and honestly wish for them to go home and get a shut eye...
I can wait for the game till tomorrow, one day of the usual daily quests missed aint so horrible.
And I am sure we will get compensation of much higher value than those daily rewards and any missions u would use your stamina on, in the end.
50 gems min. 120 gems max. A possible 5* ticket. A not very possible "choose your 5* waifu" ticket, and most likely than not a "random 6* ticket