The Louvre is well worth every cent of the admission price, but it is best to go in with some idea of what you'd most like to see. I'm an art history enthusiast with the stamina of a hiker, but spending a full day in the Louvre seems unfeasible to me: I'm willing to bet the sheer magnitude of the Louvre's collections will wear anyone's appreciation out in about three hours. Hence, grab a map, try to make sense of it and proceed towards the section that interests you the most. Leave while you're still amazed instead of overwhelmed and bored - and come back for more either in the next afternoon or on your next trip.
As for practicalities, the side entrance in the Richelieu wing is far less crowded than the main one under the pyramid. The Paris museum pass is very handy for skipping the ticket lines. It is also worth noting that not all of the many toilets marked on the map will be in working order, so if you come across one that is, best make use of it.
Musée du Louvre, 75058 Paris Cedex 01
+33(0)1 40 20 50 50
www.louvre.fr
Google map: bit.ly/kJdWPC
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