Upload & Sell: Off
In the keywords in LR, I only use their full names, location, the word "wedding" or "engagement", the city and state, and the date. That's it.
As for images. I "P" the ones I like. The others, I don't flash. I 5 start the ones for my blog. Then of those, I 6-key (red box) the ones that are my Facebook teasers.
No matter what they would ever seen (not that I think my clients will ever do that), they'll only see picks, 5 stars and red boxes. Simple as that.