So one more email!!  :)  

About 5 seconds after sending the last email, I realized that I could just turn on the RSVP function on the website.  I have actually never done that before, but I found that it was super easy, so go ahead and just RSVP there just like you would for a swim meet.  If you still RSVP to my email or text, I will just RSVP for you online.  No worries!!!  Now you just have another way to reply that is more familiar.  Thanks so much!!!