What to bring on vacation

I'm getting ready to leave on my first vacation (to Israel) since I bough my Nikon D600. I have had the camera for a year and a half and I mostly use it for studio-style portraits of my daughter and indoor and outdoor quick shots (family day trips, pictures of my daughter with her toys in the living room and back yard, etc). My usual "walk-around" lens is an AF-S 50mm f/1.8G. The camera came with a 28-300mm f/3.5-5.6G, which I have honestly never used. I also have a nice Nikon flash, which I have also never used - I take most of my photos in the daytime, and with the f/1.8 lens, I can almost always get enough light to make the photos happen.

My question is how much gear I should bring with me. I have a passport sling camera bag with room for the camera body, both lenses, and the flash if I need to. I am not planning to bring a tripod. I will be there for 5 weeks, but it's a work trip so I will be working for 4 of the 5 weeks.

Is it worth bringing the flash? I can get most of my indoor shots with the f/1.8, and I can't really picture when I would need to take photos at night.

Is it worth bringing the zoom lens? If so, should I still bring my prime lens? f/3.5 will be a bit of a shock and I'm afraid it will really limit my indoor photography, especially in museums and at work (in a hospital).

Or should I just stick with what I know and take my prime lens only?

I would love to hear as much advice as possible!

The flash and the 50 are not that heavy and won't take that much room. I would absolutely NOT leave the 28-300 at home. This I would keep on the camera for all around shots.
Enjoy yourself and have fun.

Take both lenses, and get a bean bag and shutter release cable for longer exposures in less light.

Hopefully, you'll have multiple memory cards and a computer to download the shots to.

Have a wonderful trip.


WM

Thanks for the tips, everyone! I will have my laptop, and I have a remote (which, again, I have never used, but how hard can it be?). I have 3 batteries (just in case), plug adapter for the charger, and two memory cards. Do I need a voltage converter with the standard Nikon charger, or just the plug converter?

I have never used a bean bag. The ones that I see online seem pretty big. Do smaller ones work?

Are gorillapods worthwhile?

I think these "superzooms" like your 28-300 are made for vacations, so I would definitely take that.
I'd also like to hear people's thoughts on GorillaPods? Seems to me they could have a number of uses but I really don't know if they're any good.

Take a mini tripod. I never leave home without it.
The full blown one only comes on predetermined shoots.

take the zoom take the zoom take the zoom take the zoom take the zoom take the zoom

Ok, ok, I took the zoom! I am here now and just used the zoom on a quick walking tour of Jaffa. It was definitely handy to have, though I'll definitely need some time to get used to the extra weight compared to my 50mm!

I am having the same situation. I m headed for Germany, Swtzerland and Austria with the d610 and have a 28-300, 85mm,50mm and the 24-85 kit lens @ half the weight. The 28-300 is a very heavy lens so I bought a sling strap thru Indigo Marble that hopefully will solve the probem of having a sore neck from the neck strap. I still have a month to decide what to take as for lenses. Time wil tell I reckon...

I ended up buying a camera bag that looks like a purse (the Lowepro Passport Sling) and putting my camera in that any time I wasn't actively taking pictures. It made it much easier on my neck and back.