Board Thread:Game Discussion/@comment-27095714-20160224060615/@comment-26715739-20160224061258

Several people already have all 4 - in more or less a day. A key factor seems to be whether you get ads to help reduce service time and/or upgrade time.

However, I'd recommend that you start now. You don't have to do anything until the 26th, but you'll have a couple of extra days unlocked - then you can catch up those several days at once. The first 3 days can be done in less than an hour without needing to service.