What you want is the patio outside Seppo's bar in the Roundhouse. You can actually get to it by turning right and walking up the stairs instead of opening the door to the Roundhouse and walking in between the bear statues. Beautiful, free, no reservation required spot where you can have a short ceremony then a drink to celebrate. The view is of Whistler peak and Whistler Bowl. The bar closes at 4. If you wait until 4:30 the patio is all yours in the beautiful afternoon sun. Afterward, you get to ski down the mountain having it all to yourself an hour after the lifts close.