I guess you have answered your question yourself
It is unlikely and we are also uncertain what we'll be able to do at that moment.
It is very unlikely and it means that nobody can guess any reasons we shut down immediately. Probably super tornado or terrible earthquake or some terrorrists, etc. I doubt even if we'll be so quik to send a notice it will help you
When talking seriously we'll do our best to send a notice when something bad happens.
As for the server move. Server move cannot be performed within a day or even a week. It is a long process that takes about 2 months. We already done server move and most of the customers were happy and was moved without problems. But there is still a portion of qustomers who may not understand something and it can result in downtime. So in future we'll try to avoid any server moves where it is possible because even with good planning it makes hassle for some our customers.