When the kids were a lot younger and when we lived in a house with a huge deck, the kids and I would eat outside a lot. They just enjoyed eating and drinking out there and just talking. We would actually sit out there for hours and afterwards I never had an issue with them about helping to clean up.
When we moved to the house that we live in now, we didn't have a huge deck, just a small porch in the back. It wasn't big enough to set up any tables or chairs. However, a friend gave us a picnic table to put in the backyard and my kids and I would eat dinner in the backyard a couple nights a week. That table broke a few years ago, I haven't thought about getting a new one until this post.
As you can see, my kids and I love eating outside...now that I have a 20 year old, three teenagers and a 12 year old, we all still try to get together and picnic or just meet up and have lunch at a restaurant during the warmer months, and eat outside. That's just something we all love doing, my husband is the only in the family that just can't stand eating outdoors. He says, he doesn't want to fight with bugs and eat at the same time, but for me there's nothing like nice weather, good food and friends and family to share it with.