I always use ATMs when traveling (Europe and elsewhere) and never have had problems – I find that having cash is not only more convenient (and I’m guessing fewer fees?), but opens you up to lots of places/activities (farmer’s markets, roadside stands or even little shops, things out of a big city, etc). Debit cards with VISA logo can also be used like credit card.
I agree to pack light, and one way to do that is by putting smaller amounts of things in smaller containers. For example, for two weeks you probably only need a small bottle of shampoo, so why carry the one it comes in? Try to look at how much you use and how often, do a rough calculation, and put it in a smaller container (which definitely won’t leak!). This applies to a lot of toiletries, though of course, contact solution for instance needs to stay sterile, so you would need to buy a small one, and likewise you can find a little travel-size toothpaste…
For clothes, for two weeks I’d bring 3–5 outfits, planning to wear each thing (in new combinations) 2–3 times, and more tops than bottoms. Like 3 pants, 5 shirts, a couple overshirts and sweaters and/or a light windslicker type thing (assuming you’re going soon and the weather will be fairly warm), a week of underwear/socks (which you can wash daily or all halfway), etc. I always carry one more casual outfit and one nicer outfit, since you never know when the opportunity to go to a concert or a farm (or fill in your interests) will arise.
As above, outlet adapters. Other small misc objects: safety pins, little sewing kit, IDs (passport, drivers license, student, etc), day bag/purse, ear plugs (if you tend to use them), razor if you shave, tweezers, band aids, etc. Also, camera, if digital its cables/plug and laptop or flash drive or other storage, or if film, then film. If you’re checking bags, an all-purpose tool that has scissors and things. Obviously buy or print out maps of cities (and you can find subway maps online), if you want/need basic phrases, travel guide, etc.
Depending on your typical habits and mode of travel, packing light is key! I wouldn’t take more than one backpack or small/medium suitcase for a two week trip (assuming you’re not doing anything out of the ordinary there).
there’s more, but that’s off the top of my head…...........