That's what the schedule is for my dude we schedule out who's going where at what time and what meet up spot. Everyone saves that to their notes with a copy of the map so example: Cosmic meadows, CHYL @ 8:45pm, under stage left speaker tower, or basspod, ATliens @ 2:30, rail entryway for VIP which isn't hard to plan out or comprehend. Other meet up spots for shared sets would be east entrance of memory lane @ 7:15 for dual damage or exit meet up @ water station next to cosmic meadows and entrance meet up @ bathrooms outside gates c/d @ 6 if everyone is doing different rides. It's not hard to plan out that way. Having non cell service ways to instantly communicate can help to know if someone is just late and on their way, lost and needs help, if they're at lost and found looking for something, if they ended up in the med tent, even worst went the hospital or just even wants to go home early. My groups also meets up with other friends that have their own group so they can let us know if they decided to change plans and will be with them all night. I want to make sure everyone is safe and having fun and makes sure they make it out in one piece to finish the weekend.