You want to be in or out?

Hi there, I'm having a surprise birthday dinner for my boyfriend's 25th birthday and so far I've got 14 people coming. I wanna do something nice for them too. If you were one of my guests, which would you prefer? Sit inside or out in the patio of the restaurant? It will be around 77 degrees out. Also do you prefer $10 off your meal or a slice of triple layer chocolate cake and a shot?