I've seen those vineyards before but never had a chance to go grape picking. Sounds like a fun (and yummy) experience! Looking forward to hearing more about your adventures in the Philippines. I lived in a small town that was an hour away from Baguio for about two years.
You should try it next time :) i will keep posting if i have a chance.. is that in Rosario, La union? because it's also our province.