We went from WL in February and had no problem getting onto a bus super early. I'm sorry I can't remember what time it was, but I remember it being very easy and they were running to HS early enough that we didn't feel any stress at all! We were nervous before we did it but my mom was in an
ECV so using Lyft wasn't a reasonable option but we're glad we went to Disney Transportation! We caught the first bus, and there was another family waiting with us. There was a second bus, according to the bus arrival board, on the way as well.