Here are some good examples. They try to create a coffee house type of feel, lower lights, candles on the tables music playing in the background etc. They do have some chairs set in rows. Some munchies or other take always usually relating to the message are placed on the tables themselves which always have a pitcher of water and cups on them.
Church members find it unusual at first, but unchurched seekers and guests like it.
The worship format is pretty thematic. They use quite a bit of multimedia video clips, PowerPoint for songs and visual story telling and other visual elements in our service. They have a praise team. The usual setup - vocals, bass, drums, guitar, keyboards, horns, percussion. The table decorations connect with what is going on tint he theme for the day.