When I first arrived 3/24 I also thought it was extremely crowded. I didnt get to MGM till early afternoon though. Lunch at Brown Derby and went over to EpCot.
Sat 3/25 I took the KTTK tour so didnt get to Epcot till midafternoon.
Sun 3/26 after early brkfst at O'Hana's (they were able to get me in 2hrs earlier than my AR) I went over to AK. It wasnt that bad since it was earlier in the day. I managed to get on EE three times - once w/FP, twice w/Singles line.
Mon 3/27 got to AK during their early hours. FP for EE, rode Safari, rode EE once w/FP, twice w/Singles. Saw FoTLK, remainder of park and left by 3pm
Tues 3/28 got to MK by opening. Did all the big rides, birthday lunch for my friends DD in the castle w/the princesses, left midday, pool brk at WL, back to MK at night.
Wed 3/29 at EpCot for their rope drop. Actually we were literally ahead of the drop/opening show and had to wait. Rode TT and Space, etc. Lunch in Mexico. Checked into BWV, pool while waiting for room. Back to EpCot at night
Thurs 3/30 - BW pool till 1pm. Back to EpCot, lunch in LeCellier, stayed in EpCot till Illuminations time.
Fri 3/31- MGM rope drop. Rode RnR, ToT, RnR, StarTours, LMA show, B&B show, lunc in Prime Time.
So after the 3/24-3/26 wknd the crowds were definately manageable for us. And we had pool time every day at either WL or BW pools.
Would I pick this time to go to WDW? Probably not but that was when the cheerleading competition was going on that my friend and her daughter attended during my solo wknd.