Attempting to Bowl

I don't understand why this always happens to me! I went to the bowling alley today and could not bowl because there was a league going on. This used to happen all of the time when I was in New York. We would never call in advance. We would just show up and be turned down. It's so frustrating! We went back a few hours later today and I did awful! I bowled a 61 and a 100. Oh well. I hadn't bowled in several months and it was free so it's all good.