Thanks for the LARP feedback!
I'm going to focus on the Shadowrun LARP, since that's the event I played (for the second year in a row):
It was cool having NPCs in the Exhibitor Hall. It was not as cool having to hike back and forth from the Exhibitor Hall multiple times, especially when carrying my gaming bag and trying to pass through a parade. Transit back and forth ate up a significant portion of my gaming time.
This LARP is actually more confined in space than it has been in years past. In particular, the Scramble a few years ago had players walking between the Exhibit Hall and the Crowne Plaza, which is quite a walk in August for a longer event. (In the 2011 Scramble, I even played a NPC who was stationed in the revolving hotel atop the Hyatt.) We've been trying not to use the Exhibit Hall the last couple of years because it gets so crowded on Saturday and because having a whole runner team stopping in the aisle to do something blocks traffic.
Last year we got a 1-page sheet (front and back) with news items that were clues to plots. Have this return at GenCon 2016, but make the front side IC info while the back side has some OOC guidance and/or starting missions to do if you're lost.
Apologies for that. We'd actually written one of those, but I guess it got either lost or forgotten in the con shuffle.
Make the initial premise something where the PCs are paid to show up, so they get an initial amount of money (2k?) instead of immediately digging into their personal stash to have nuyen for the game. This would also help counterbalance the extremely poor cash payout of the event.
That's a good idea, I think. We've tried to keep the pay down, but we may have done too good a job at that, with the job pay being split 6-7 ways.
Designate a few NPCs to give missions for speciality characters. Maybe have Quantum Princess give out missions that only a decker or technomancer can do, another NPC asking for something to be recovered from the Cermak crater (requiring a rigger than can send in a remote drone), and a third NPC who needs something done astrally.
We've done that with some of the hacking jobs (my NPC gave out at least two hacking jobs at this year's LARP). But it's dangerous to have a plot hinge on one or more specialty missions because we can't guarantee the right role will show up for the job and it can be tough to adjust in-play.
This is the hardest one to do, but create several rumors, and give each attendee one or two rumors/infobits at random on small slips of paper. That way, each PC has some unique info that others may not have, which may help with the resolution of plots. They wouldn't be the only way to resolve a plotline...but it would give people a way into plots they may otherwise not see. For example, maybe one infobit is "Echo's shop is located on the southwest side of the Maker Collective between 4th and Grant [OOC: Exhibitor Hall, booth #657]". If that player hears other people looking for Echo, they have an instant hook into the plotline.
You'd be surprised at how hard it is to get different teams to interact, the lengths to which players can go to avoid interacting with other teams, and/or the tendency of some players to closely guard info that they (and only they) are given. I played in the 2012 Scramble, and this happened to my team: we got only one or two initial contacts, and the rest of the 6-hour LARP (the Scramble was 8 hours, including about an hour of table play at each end) depended too heavily on other teams contacting us (which they didn't). Most of the people at my table swore they'd never do it again after 6 hours of walking around doing nothing in particular.
On the other hand, I'll combine this suggestion with the "starter missions on the screamsheet" suggestion and propose the following: How about a screamsheet that has clues and jobs scattered in it, with several different versions (perhaps printed on different colors of paper), so each team starts with one color of screamsheet and maybe can do jobs to get other versions (or interact with other teams to get theirs)?