I have a total Saturday free and would like to see certain exhibits in several museums. I am considering beginning at the Museum of the City of New York, and working my way down to the MOMA, via the Cooper-Hewitt, Guggenheim, Neue, Met and possibly the Frick. I know that sounds ridiculous but I get such open days in NYC so seldom. Assuming that I get to many of these by day's end, is Smart Destinations my best money saving avenue for admissions or are there others I should look at? (I think that there is still voluntary admission at the Met, but I usually pay it.) Any other tips for a marathon museum day (besides not to try it)?