i went camping in the valley wednesday night (Lower Pines). something new (at least to me) was that they now make you read a piece of paper about the warnings of bears etc, and how you can be fined up to $5,000 if you leave your food out and bears come in and cause problems.. they also have you initial the paper (showing that you read it).
besides that, the waterfalls are wonderful right now!!!!! the meadows are turning green, and the crowds (during the week) are pretty empty... at just about any time of the day, the grocery store parking lot is only 1/3 full.
i have a powerful spotting scope, so i set it up in the meadow across from El Capitan and watched 2 guys climb over the top ...two others were on their way.