Olympus U 5010
The common specifications of portable cameras would be that of having 14 mega pixel photos as well as one of the smallest cameras to have 5x zoom, the ability to take wide 26mm shots and a HD movie mode that clocks in at a decent 720p. It also has image stabilization which works real well when you're trying to juggle difficult positions as well as shots and you can look at your images on a decently sized 2.7 inch screen before tossing it into your laptop.
The Olympus U 5010 weighs only 126 grams which is really light and fits easily into small pockets too. It also has face detection which can make taking group photos hassle free if you're not into tweaking perfect shots, or if you prefer throwing it into Photoshop to finish up. It is pretty much the size of a credit card! If you have the time, you can also toggle with a few extra function available on the camera to get the perfect photo on the spot.
It has 1gb of internal memory, which can be a life saver if you've forgotten to unload stuff off your SD card! Definitely worth its weight in money since you can get it for about $200. I personally use the black version and it has been working great. Then again SD cards are cheap these days with even an 8 gigabyte sd card selling for about $15 from amazon which gets shipped right to your house, which you can get shipped with the Olympus u 5010 camera and save on shipping costs. Currently the mju 5010 should cost about $150 and you can take advantage of shipping deals where relevant, like the seasonal offers for example: Christmas Shopping packages.
It should come with a carrying case as well as a strap to make it easier to carry around. After all, this range of cameras are meant to be ultra portable! It's not going to beat a DSLR in quality as well as customization, but you can't bring a DSLR into your pocket wherever you go.
If you do get it, remember to check if it comes with a free SD card, or you might want to buy a cheap high capacity SD card! Make sure to check which model it is as the letters 5010 is shared by a few. There are very few olympus u 5010 reviews out there however.
Another possibility is to go grab an extra battery if you don't plan to bring a charger along with you on your vacation trips. Or if you don't want an Olympus there is always the Lumix. Depending on your price considerations it might also be a good idea to look at the other olympus models out there too like the slightly cheaper 12 MP version which isn't really that much of a difference depending on how you intend to use your photos, but is a few dozen bucks cheaper. Although amazon seems legally bound not to display the price, you can get their 5010 for about $150 or about $50 off the list price.