Hi there! I had over 50 people for my wedding in January and did my reception at the Grill, which is very similar to the Lobster House. I did 6 round tables of 10 people, and the dance floor seemed big enough for everyone. Depending on how many people you actually have you might be able to make it fit. Have you also looked into the Ballroom Foyer or Oregano? Agave would be very pretty, but it will likely be very warm without the ocean breeze. We did our rehearsal dinner in Garibaldi Square next to Agave and it was warm.. not uncomfortable, but adding in some dancing would be another story. Another idea.. Las Olas could work with some version of tables on the platform and a dance floor in the sand or vice versa. Just throwing out as many ideas as I can think of!