Here's our next question: We are flying to Seattle (cheaper than to Vancouver). Can we get a rental car at Seattle airport and drive to Vancouver, returning the car there? We weren't sure with crossing the border if that is possible or not. Ship leaves Vancouver Friday, we're arriving in Seattle Wed. night and want to head to Vancouver to do Butchart Gardens on Thursday. We were figuring a rental car would enable us to tour around a little and not have to worry about luggage.
Any other tips about Seattle/Vancouver much appreciated!