Revelers can sing in the holidays by caroling with friends and family from a boat on the River Walk and celebrate the timeless tradition of spreading joy with a San Antonio twist. Parties can charter an affordable private caroling boat and bask in the glow of 100,000 Christmas lights. Boats float on the river each night, carrying a different group each hour performing live Christmas Carols. More than 185 groups participate; school, church, office, nonprofit and civic groups. Joyous caroling fills the evening air along the San Antonio River Walk.