Our games around here start @ 6:30 PM, so I kind of enjoy the first month when I know neither team has had their infield and I walk onto the field at 6:25 PM and call for the plate meeting.
Coaches typically give you the, "But we didn't get an infield." or "They had an infield and we didn't". I tell them, "Game starts @ 6:30 and plate meeting happens @ 6:25 PM. Next time show up earlier and make sure you get your infield if you really want one."
I typically show up 30 minutes before the game and walk around the field. When the coaches see me, it doesn't take long for them to get their infields going!!!