Can we just walk in and eat?

umm.. today may 3 is my birthday and my family and i wanna go eat at a restuarant at the biltmore hotel of coral gables,fl. can we just walk in and eat at the restuarnt but not like stay at the hotel cuz we already live at miami beach so lik y bother staying at a hotel just a few miles away. Also how should we dress to the restaurant u tell us to eat at?