I heard this really good idea that I wanted to share.
At the end of the reception have the guests leave the room. Keep your photographer in the room and you and your significant other. The two of you dance on the dance floor by yourselves. The pictures would be great because it'd be just the two of you and all of the leftover tables and decorations scattered about in the background. It would be a moment you'd probably never forget.
Not sure how you'd go about setting this up so i'd ask a professional but I think it'd be a great idea for anyone who's having a wedding at a hotel or somewhere where a sendoff outside wouldn't make sense. Or, you can do it while your guests are gathering for an actual sendoff outside.