It would be an expense, but I really encourage you guys to consider the dinner and preferred seating package that we (Bubba, V, Ian & I) got for WOC. Our dinner res was 7:10 and we asked for tickets to the second WOC show. If you could get your dinner res a little later it would work out perfect. The first show was 9, second 10:15. I think the second show is better, even though it's later, because the preferred viewing section was not at all crowded, the line for it was small and we didn't have to wait in line as long as the people who just had fast passes for the same color area.
The WOC show is pretty long, over 20 min, maybe 25, so the turn-around is a bit of a crunch. They have to exit the 4000 (the number I've heard) who saw the show, clean up, then let in the next 4000 for the next show. My experience has been that by the time you get to where you're going to watch the show, you have about 20 min. to stand and wait 'till it starts.
Another reason to go for the dining is that it'll save you some big chunks of time that you'd have to spend waiting in line for FPs for it over in CA and waiting in line for the show. (If you just have a FP (not preferred viewing) you have to line up at least an hour before your show starts, maybe more if you want to be at the front of your line (which is a good idea) and you stand the whole time you're in line, plus you stand once you get in the viewing area and during the show--wear comfy shoes!). Since you have a limited amt. of time to see DL, I think it's worth the $$, if you can do it, to "buy" yourself more time to spend there.
The day we saw WOC Ian & I got to DL fairly early, not right at opening, and we were able to get a FP for Space Mt., do the subs, & several things in FL before it got too crowded. We were on the go the whole day, up until we had to go over to CA for dinner, but we saw quite a bit. Ian, Bubba, V, chime in with your perspective on that day. We were really whipped by the end, but we got in a lot!