Rawda- Permit, now what

I got the permit. Where exactly do I go to get in line and do I really need to be there 30 min in advance?

Edit: u/Halal-Digest sent me this: https://www.mabrooressentials.com/rawda-essentials I went to gate 37 (if you are a man and on the opposite side of the masjid, walk through the masjid using gate 19 and exit near gate 37). I was able to calmly pray for over 10 minutes; when we exited, they did not have our exit besides the grave of the Prophet s.a.w. but we exited from on the other side- taking a right turn from the mimbar.