The Sunday Ice Cream Cruise now departs from S. Lake Union Park, GO TO HOME on Left Menu for more info. Year round service, the Sunday Ice Cream Cruise departs on the hour 11am through 4pm (Spring schedule) Sundays from South Lake Union. This is a 45-50 minute tour of the Lake Union floating homes, a peek at Dale Chihuly’s studio, Gas Works Park and the Sleepless in Seattle houseboat. The tour includes a humorous narration of old Seattle and some funky background music. Adults $12, Seniors $11, Kids 5-13 $8, under 5 $3. Pets OK. Walk-on only, tickets available on boarding, cash or check only. Ice cream treats, coffee, hot chocolate and soft drinks, $2 to $4.