Hmm. Maybe I am thinking of 2010? (Is this when you realize you've been to DLR too many times, when they all start to blend together?) I recall that they used to use all of the GRR machines for WOC, and would then switch them over to GRR later in the day. That usually didn't happen until after noon, but there was no specified time, so if you wanted a FP for GRR you'd have to keep checking back to see if they were available yet. Not too convenient.
ETA: Wasn't it summer 2011 when DLR guests got the two extra FPs for each member of their party? I recall the CM letting us use those in the FP line even though we couldn't get an FP yet because the machines hadn't been switched over.