Did one like that with a similar setu . Baby grand in the Foyer next to a staircase. I was hired to do a Wedding Rehersal Dinner on the piano. They were in other rooms also but wanted piano music just for ambiance in a classy place. I show up and the Caterer tells me I have to pay a fee to play the piano. I refused and said if you want I'll bring in my own piano set it up next to the Baby grand ( I ALWAYS bring mine just because ) and ruin the setting. He backed off.