Reception Space

So we will be having the ceremony and reception at my FH's church. The ceremony will be in the sanctuary. I will do a little decorating there to make it look nice. I will do a lot of decorating to the social hall and that will be where the reception is held. It's not a super large space but plenty of room for the tables and food and bartender. The social hall has doors that lead to a large enclosed court yard. My thought was to have the dancing out there. I have a couple questions for everyone.
Is it weird to have dancing in a slightly different place? It's not far at all but you do walk through one door. I think it would be weird to move back to the sanctuary for dancing, so that's why I thought court yard.
What kind of decorating/lighting should we do to the courtyard to make it dance ready? We might also host karaoke here at the end of the night. How should we structure the first dance so everyone can easily see? There will be a few elderly people who we need to have sitting the whole time if possible.
Thanks!