The weather is on your side. I can only think of a few times in my career having to deal with rain on Opening Morning, and few more where rain moved in later in the day. Twice since 1990, there have been roaring thunderstorms. The last one in 2006 was a doozy. I knew the rain and wind were going to be there. I rigged for it. I was up a tree when it hit. It was all cool until the lightning started. By then, the tree was swaying too much to attempt to get down. I stayed up until 1000 and then came out, just as the front blew through-- dropped the temp 20-some degrees.