I didn't either. I'm just pointing it out.
Why is putting stickers along the parking lot any less efficient that putting stickers down for queue lines that can hold up to 5 hour waits? (Such as Flight of Passage... They start the stickers ALL THE WAY back at the bridge to Africa... AND it's on BOTH sides of the path) I doubt putting stickers down on the ground would be any more inconvenient for them than all the stickers everywhere in the parks. So there's the answer to that concern. (Of which, there are even more easy solutions to)
As for getting guests off the tram, they don't need to get off all at once. This can be fixed with a simple "Please wait for a cast member to escort your party off." Take it one vehicle section at a time, if they're that paranoid... But I still don't see how letting all out at once would be any worse than letting a mass amount of people in an enclosed building get off at once such as the movie theaters, living with the land, everest, and other high capacity attractions.
Also, if they have enough trams running, they don't need to REALLY fill up those trams, which would take pressure off of the temperature check stops. Like I said before, have it staffed similarly to Wildlife Express Train. Where they have 3 or 4 cast members attending the tram boarding station, telling parties when and where to sit, ect.
This doesn't sound like rocket science to me... And it doesn't sound that costly either.
AND AAAAGAIN with all that said.... I was personally suggesting trams at the END of the day, not the beginning. So whats the deal with that?