Jennifer,
I just wanted to mention I have the same issue as you do, and what I found worked best was for any day past the first day, set up one task with only one space to be filled, and then I would fill it, so it was obvious no one needed to sign up for additional days. In some cases I even changed the name of the task to “ignore this field, sign up for the weekend in the spaces above” or something like that.
If it were possible to create a multi-day event, but have zero tasks for the other days, that would work for me, but right now you need at least one task per day.
Stephen, amazing plugin! I bought the customizer, and will donate additional money as well, because I appreciate all the work you have put in.
Thanks,
John