You register on the same day. 30 min before the tour starts. Its only standard OU. They usually last about 2 hrs.
They have ADV, D/P/Pt, and BW all OU only.
Yeah man, laddering is a waste of time, yeah you get #1, proves you're a good player but you have to be #1 for a while or else no one will rmr you and trust me its tough to maintain #1 for months.
But winning a tour is like a trophy, no one can take it away from you.