First, assuming you only get fireworks at the start of each corral and not at the beginning of each wave within a corral, you've cut your pyrotechnic budget in half.
You'd think ... but they did fireworks for the start of every wave during Wine & Dine - and they were pretty legit fireworks from the field that used to be the Speedway next to the Heroes parking area at TTC. So ... crapshoot.
Hi Dis Yoda! I researched the Runner's Relations contact you mentioned regarding my misplacement in the corrals, and I found this website to share with others who may have been placed in the wrong corral:
https://www.fitdisneymom.com/how-to-fix-wrong-corral-placement-at-a-run-disney-race/
I've already contacted RunDisney and Trackshack and supplied the info that is needed to fix the error. Now all I can do is hope for the best, and that it can potentially be taken acre of at the expo, or if I'm lucky, maybe before. I'm not holding my breath but it's worth a shot. In any event, hopefully this website can be of some assistance to others.
At this point, nobody online or on the phone will be able to do anything for you - nor will they make the effort to, unless there was a major error on their part (ie. you should be in A but are corralled in E). In all likelihood, they're going to tell you the exact things I'm going to tell you know:
1. Check your Active.com Registration and make sure that you have a current Proof of Time (occurring at a race within the last two years, is of a distance of 10 miles or greater, and has a link to view official results).
2. Check your ESTIMATED TIME OF FINISH. If you did not change this to correspond to what your Proof of Time equates to, they will likely not move you as this was where you said you would finish, regardless of your Proof of Time ... Disney doesn't do math to benefit you when it comes to these things.
IF your Proof of Time meets all these critieria AND your estimated falls in line with that Proof of Time, print out your registration from Active.com and bring it with you to the Expo. Also, bookmark on your phone the website that shows your OFFICIAL Proof of Time (or print it off as well, sometimes the internet connection isn't great at WWoS).
Pick up your bib from the Volunteer at Bib Pick-Up ... don't bother asking them about changing corrals, as they not only don't know about protocol, they have no say in the matter either.
Go over to Runner Relations and get in line. Be prepared to wait. When it's your turn, show them your Active.com Registration, your proof of time and your bib and ask what you could've done differently to be corralled in E. They may help you, or they may send you on your way.
If I had to guess, your Estimated Time submitted doesn't align with your Proof of Time and that's why you were placed where you were. If there was an issue with your Proof of Time as submitted, you'd probably be in H (based on my recent experience at Wine & Dine).
Anyway. Good luck.
) and I made a tab in the trip planning spreadsheet that's just dedicated to marathon timing, for my family to reference for spectating. I think it's safe to say that I'm a little obsessive that I made this over a month ago (also because I couldn't have something not be in 5 minute increments LOL). 
