I am a beginner, have an Australian chardonnay in primary, and wanted to get going on a red. We picked the Chilean Pinot Noir, but I didn't learn how to read the date codes until I got home. By my reading, this batch was "produced" (16809) in June, 2009. I haven't opened it or broken the seal, so I'm assuming my local shop would let me take it back. Is this something I should do, or is this product so "shelf stable" that it won't make a difference? Thanks for any experience folks can give. I'm learning.