I attended the draft.
The stage was directly on the waterfront, between the river and 1st Ave. Mostly production in that area, NFLN on the left corner, ESPN on the right, tech center right in the middle. VIP seating area, maybe 100 people. No idea how to get in there, we never even got close to that. We weren't there for the draft per se so didn't look into that.
The block between 1st Ave and 2nd Ave was cordoned off with gating and I believe that was ticketed SRO. Probably a few hundred?
Everything behind 2nd Ave was ticket-free, FCFS. We got downtown Thursday around 4:30 for food, got to Broadway at like 6:00 (first pick at 8:00) and it was backed up to 5th Ave pretty heavily. You could have elbowed your forward to probably 4th Ave if you were prickish about it. We didn't try, we checked it out but left and found a bar that had opened that day. We probably ordered their first beer actually, asked the waitress if they were open, she turned to her co-worker and asked her. They both shrugged and poured it up. We stopped there because it had a Prince's Hot Chicken truck parked in their lot and that was on our list of must-try's. Because it was so new and it was 2 blocks off of Broadway no one knew about it and we had the place mostly to ourselves so we just stayed there.
Friday we got there around 7:00 and got down to about 3rd Ave. Not nearly as many people despite it being Friday night. We were there about an hour, saw some picks, then headed over to the stadium to check out that part. We ended up hanging there watching live music, a big screen, and consuming way too much food and drink.