Past summerholiday I used my heavy intrusive 70-200 2.8L II IS for candid swimmingpool shots (as espected best sharpness/colours/bokeh).
This year i'm gonna pull my 135L out of the dust for candid swimmingpool pics & outdoor portraits with filter (it's almost 40 degrees in Turkey).
Finally performance for the money... it's my least used lens, but when you use it, you get "wow pics".
I also take my 35 1.4 Art with me for lowlight restaurant shots and portraits with background,
and my 16-35 f4L IS for wide shots & movies (a wideangle is always fun on holiday).
With my Samsung S3 phone & underwater case I'll try some fun underwater movies/pics for the first time.
I'm no allround lens fan, so those 3 lenses are my most "compact" set this year
I'm going to check for a .cr2 app for my tablet as Android doesn't display raws, it would be nicer to preview on a big 10.1" screen to eleminate the least interesting pics.