Perfect for Celebrations, Family Outings, Retreats, Bachelor/ette Parties, Fitness, Corporate Outings and Simple Get Away Breaks. ATFS offers spectacular Mississippi River group kayaking tours out of our downtown Minneapolis location! Ever have that Mark Twain dream of spending time on the Mississippi? Well, now's your chance to explore the River at its most majestic. Check out our 2.5 hr, 1/2 day, full day tours!