DS and I are registered for 5k, and I am registered for 10-miler!
BTW, the browser that got through first was Firefox (non-private) that I click on at 1:41pm ET. This one only had about a minute wait once registration opened, and I was fully registered (for three events) by 2:08pm ET. I clicked on several other browsers (both regular and private) including Chrome, Edge, and Safari. Some I clicked on early and others closer to 2pm ET. They all had a wide amount of wait times with no rhyme or reason.
Also, I don't think Firefox is anything special as last time (Marathon Weekend) Firefox had the longest wait times. I really believe wait times are randomly assigned at time of registration, so having more browsers open is beneficial.