I'll also be there end of may/beginning of june and I'm hoping they open up fastpasses for that time. I check every once in a while, but I'm not expecting them to become available until after the ride had officially opened. It just makes good business sense to not offer something until you know for sure it will be available. If they offer them at the last minute, everyone will be happy to get one. If the offer them ahead of time, then due to unforeseen complications, the ride isn't open, there will be a lot of angry guests.