I need a simple answer for 2 simple questions PLEASE!!

[MrGarrison]

OK - I read some of the questions and answers regarding what to do when you open a bottle, but do not finish it. What about this though: If I open a bottle and have a glass or two and may not get back to the bottle for a couple nights, maybe even a week, what should I do? Refrig? Leave out? Will it still retain its taste that long?

#2: I have found myself buying mostly merlot's. Every white I have tasted (only a few) has tasted like burnt popcorn (best I could think of). Too much oak taste I guess? What then would be a good white, or red wine, that isn't dry like most merlots, but is still sweet? THANKS ALL!