This has been happening to me and some people in my group so frequently over the past two weeks or so that I figured it was time to post it.
I'll get the 199 second timer, wait it down and get an infinite wait time of 'Please Wait'.
I have to leave the server, relog into the server and 75% of the time I'll get another random timed timer of anywhere from 30, 60, 90 second wait time. Sometimes I get right in but not very often.
This happens on every difficulty, HC…3PP…EXP…etc.