I got this from one of our students recently. One of the things we do here in AZ is a student can send his ammo and firearms to avoid the hassle of traveling with them. So he asked -
"300 rounds seems low to me for a round count for this course. If I order a case of a thousand, that will give us 500 each. What do you think?"
My reply was what I always reply when asked about round counts.
You can certainly bring more ammo and shoot more if you like and there is time. But I want to will tell you that in my classes I actually teach things. There are classes that are judged by the number of drills and the super high round count. One pistol class, I was told, had a count of 2,000 rounds per day. My class is not like that. The goal is to make you a better shooter and a better gunfighter.
To expend ammo endless drills that will leave your skills exactly what they were when you began, all you need is a range. To learn you need a teacher to teach you new skills and some shooting to understand those skills. This involves much more than just a mindless drills with high round count. It is like actually going to school to learn.
You will have a great time and I guarantee you will leave a better gunfighter.