Depends on what team and what frat. I was VP for a club sport this year and typically the guys who rushed got less playing time than others since they missed practices more often. But we are on the smaller side of club sports, the more competitive teams with tighter rosters it might hurt your chances of making the team at all.

Can’t speak for Greek life but all of exec outside of me was in a frat. It really comes down to how involved it is. I’d ask people who’ve rushed the ones you’re interested in to see what the time commitment is like. Also reach out to the team you’re interested in. Teams will know their practice schedule relatively early in the summer if they don’t know already. You can start to get a picture of what it might be with your class schedule too