So...

I'm not a newbie, but have a weird question.

In a few weeks, I'll be backpacking in the Catskills a ways in, setting up camp and hitting some trail-less peaks returning to the backcountry camp. So I'm in a quandry as I'd like my large volume (4700) pack for backpacking in... and then a daypack for the peak day.

How do people handle this? Do they carry a daypack with them? I also need to get a hydration bladder, so I am condsidering getting a hydration daypack - but I am thinking it would be ugly (heavy) to strap a hydration daypack on my multi-night backpack.

Thoughts?