Victoria id pretty nice and just one day travel is waste of money because you have like 4 hour to visit the Butchards gardens and the city. You need at least 2 to 3 days.
Make your way to Seattle’s Pier 69 for an early morning departure, bringing your US passport, passport card, enhanced driver’s license, or enhanced ID card for arrival in Canada.
Settle into a comfortable seat, and enjoy views of the Puget Sound as you cruise to Vancouver Island, watching for whales, seals, and birds along the way. There’s a duty-free shop on board, as well as cafes and outdoor viewing decks. Upon arrival in Victoria’s Inner Harbour, set out for a day of exploring the historic city, the capital of British Columbia, on your own.
You might browse downtown shops, visit the Empress Hotel for high tea, or make your way to the sprawling Butchart Gardens just outside of town.
At the end of the day, return to the Inner Harbour for the trip back to Seattle, enjoying late evening light as you retrace a path through the San Juan Islands.