I'm sure it'll be ok, it seems to be pretty normal for it to be horrible the first time out after a lesson because so many thoughts are going through the mind. I have enough time for some more range visits along with 2 more league nights and maybe one more regular round of golf.
Dude, even if you don't get it straightened out by then...I've had some of my most memorable and fun rounds golfing with friends that are just absolutely terrible. I mean, couldn't break 100 on a par 3 course bad. Just come, have a good time, and don't stress about it. No amount of work is gonna make you the best golfer there by August 3rd, so just come and have a good times.
I go golfing with my friend Jay occasionally, and on half the holes he just puts symbols because he says he can't count that high. lol