Blizzard knows about the realm problems as well as anybody, and as is their tendency, they're compensating for it by giving us all playtime credits. This time it's a full three days, for anyone with an active account on US, Oceanic, Latin American, European, and Russian realms (so basically everyone except Asia; the Asian realms have a different payment structure).
That's one thing I really like about Blizzard. They may mess up, but at least they try to fix it. Now can I have a Squashling, please?