For email migration, it could take from 1 week to months, depending on the size of mailbox. The larger the size of mailbox, the longer the time it will take. In most cases, email box migration will be complete in 2 weeks.
No, it would not affect any daily operation on the email. This is because the migration is happening in the back-end. It will not affect any access of the mailbox.
Standard setup will include all the office 365 out-to-the-box features of the license. With a standard set-up, users will be able to start using office 365.
Standard migration will only migrate the emails of the mailbox. Advanced migration will migration the extra, for instance, the calendars and contacts of the original mailbox.
Yes, we do perform file server migration as well. However, due to the complexity of file server migration, it is not designed into our packaged items. Please contact us and our engineers will advise on migration on file server.