We were in WDW last weekend as well and rode EE 2x on two separate days. Sat am we arrived at park opening and got fastpasses then rode standby, about a 30 minute wait. Returned on Monday and rode standby with only about a 20 minute wait and then later in the day via the singles line.
FWIW the singles line moved fairly quickly and to an above poster you don't need a fast pass for the singles line but you will be ride separate from your party. IMHO it was well worth it!
I also noticed, as a pp mentioned they were enforcing the ride windows on EE, at least on Sat the 8th and Mon the 10th much to the dismay of some. The same was true of Soarin, Sat and Mon evenings. So although most CM's have been allowing late FP return times that wasn't always true for those two rides. Disclaimer - I realy don't care when or how you use your FP, not my busineess. I am mentioning my personal experince in the hopes that someone reading won't be dissapointed if they are counting on using late FP's and can't ride.
TJ