Good dance songs for weddings?

Hi everyone! I am currently trying to pursue a side career in becoming a Dj for weddings and have a wide collections of music but just asking for any good songs that you would want played at your wedding. Please no trance or techno. Always looking to improve my playlist. Country, Rap, Rock, Pop, Christian, etc... If you could, could you also list a possible first dance song as well. Thank you! Your input is appreciated.