Monday-Thursday, 6:00-8:15 PM Friday-Sunday, 6:00-9:30 PM Sing in the holidays by caroling with friends and family from a boat on the River Walk. Celebrate the timeless tradition of spreading joy with a San Antonio twist. 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. The public is invited to stroll on the banks of the river or sit outdoors in a restaurant to enjoy the caroling. Caroling boats go on sale each year in May.