Mrrzy,I've made the Peace Arch crossing into and back from BC a number of times in recent years, with my wife, with my wife and daughter, with my pre-teen daughter only, and alone. Never had problems of the sort you fear; and, indeed, when crossing with my daughter (occasionally at weird pre-dawn hours because we were heading from my in-laws in Vancouver to catch cheap flights out of Bellingham, WA or Seattle), I've been disappointed that the border officials weren't more diligent about questioning a lone male traveling with a dozing child. My sense, therefore, is that you should bring some documentation, but don't be overly concerned. In response to Alex/Mousethief's comment above, the one time I was hasseled crossing the border was when I took the 13/539 crossing. Taking the less crowded/less common crossing made me stand out and look, I suppose, like I had something to hide. No real problems; just more questions than usual. If you are willing to trade some time for ease of passage, stick to the Peace Arch route; but, of course pick your crossing times wisely: watch out in the summer especially for Friday and Sunday evenings. And have a great trip. Vancouver is a spectacularly beautiful city. I you have camping on your agenda, try to get across to Vancouver Island, where Long Beach has a fabulous camp ground on the cliffs above the coast.