While RAW post-processing is a time consuming process, I shoot exclusively in RAW and it saves me a lot of hassle. This way I don't have to worry about the white balance during the photo shoot, especially with rapidly changing Singapore weather, when one minute it's a sunny day, the next minute it is cloudy. During photo shoot I don't have to worry about picture styles, sharpening, sRGB vs. Adobe RGB either. Even minor exposure mishaps can be corrected in RAW converters. So during event you can concentrate more on your subjects, composition, lighting, etc.
And there are nice RAW workflow programs out there on the market, such as C1, which allow mass-processing of RAW files with merely few mouse clicks.
I would shoot RAW+JPEG though, if I had to send results immediately, or if I was overseas on trip without a laptop and needed to print right away in photo lab.