Tom, just a suggestion... and anybody else can pipe in with their thoughts... but have you considered an invite-only day a week or 2 before the official opening day to let some experienced guys come check the place out, play some open games on the fields, and help to work out any kinks before dealing with them on the Big Day??
Ive heard of a few new fields doing this in the past and it helped out tremendously to see what needs to be worked out, and fine tuned before you're faced with pesky issues to deal with while 50+ players are standing there waiting to get on the field....
Just a thought.
I went to the huge Yankees Vs Red Sox, incase anyone wanted know, yankees were outnumbered 2:1. Red Sox had 390 Points while Yankees had 90. For how scoring worked check page. Had amazing time, good job Tom and Refs