Sorry, that it is wrong that you generally have 75 days, maybe in the US. But I booked at german official Celebrity website, and my booking confirmation says final payment due 30 days before sailing.
And my Online Check In already starts earlier than that.
Beside that, I called Celebrity hotline, answer was "Maybe you can check in, maybe not, I don't know...". Okaaaayyyy....
I am sorry if I asked something stupid, that was honestly not my intention, but I didn't find any answer yesterday, so I asked (which is in MY opinion ok in CC Board....). Maybe my bad english, I am sorry for that.