Weekend on the Square RSVP full?

Hi all,

I’m trying to RSVP for Weekend on the Square for Saturday (I’m in Tisch) and me and my mom will be attending. However, when I RSVP me and one guest, it prompts me to reduce my guest by one because event capacity has exceeded. Technically that means my mom won’t be RSVP’ed, but will she still be able to go to the orientation assembly and such? Thanks.