To update everyone...I'm on the cruise now with my two grandkids. Check-in at Vancouver cruise terminal was smooth and easy. We just breezed through customs, no questions asked about the kids...though at 15 and 16, they look like young adults. I had the consent forms in my hand but wasn't asked for them. So, all the fretting and expenses were for nought. But I know it all comes down to the customs officer you get. And it's not worth the hassle to risk getting a picky one.