I've decided that instead of mugs or bubba kegs, I'm going to go with these "Double Walled Acrylic Tumblers" from Discount Mugs. They're the exact same size as the grande cold cups that you could potentially buy from Starbucks (for $14.99) but instead, they're for $2.78 each! However, you have to be careful about shipping to Canada. That's where they screw ya! The cups are great too. They keep cold drink cold for a super long time.
I'm in Calgary, and have a place in Fernie BC. So, I'm going to have these shipped to Eureka Montana. They have shipping outlet there for exactly this kind of thing:
I'll just hop over the border, pay the gst, and it's still cheaper than shipping.
I know that this is sorta specific to anyone that's living close to the US border, but I'm sure that they have similar services in Buffalo, etc. for all you Ontario brides out there.
Just another idea.