I'd also like to remind the OP that, while it sucks, it's also what we all agree to when we subscribe to FFXIV and other games. I'm pretty certain it's mentioned in the ToS and/or End User Agreements that maintenance will occur as necessary. Being that we all agree to it by subscribing, it's rather out of the question to demand compensation for it when it occurs. That said, there -are- situations that can occur when compensation is necessary, and, in those situations, so far, SE has provided appropriate accommodations, that I can remember.
