I also tried from home in Chicago (just to check it out)... Went into the app & onto the ROTR BG page, hit "join" the moment the clock hit 4:00 (well, 3:00 here), checked all people in my party, & then obviously it wouldn't let me join as we weren't in the park. But at least it appeared to work up to that point! FYI, w/ in seconds, I got out, went back to the beginning, tried again (again, just to check things out) and before 4:01 it said the 4:00 queue was full--so it "sold out" in like 30 secs. Not sure if it'll continue to be like this moving forward but it appears to be the same as before Covid--you literally have seconds to get in or forget it! Good luck everyone--may the force be with you! : )