Cocktail attire. Err on the side of formality while dressing for warm weather.
Yes, you must wear a mask to enter the venue--there will be masks available if you have forgotten yours. We will be taking no contact body temperatures at the door. Once you have entered the venue, please feel free to remove your mask or leave it on--it is completely up to you. We ask that if you are feeling sick that you do not attend as there will be members of the vulnerable population in attendance.
Not unless you have discussed it with us personally, and we have okay'd it.