Honestly I'm not a fan of international online shopping, I'm afraid my package will be lost. But knowing now reward.com, this make me tempt to order and just find an option for the payment. Who could resist huge rewards? You guys really know how to catch your customers.
I like your flight bookings and hotel accom though these are specifically in US so I can't book on unless I travel in US, lol. But seriously you got a nice concept here.