Here are some general tips for your safety and convenience while you travel.
Let the US (or your home country) Embassy or Consulate know you’re in the country
For US citizens you can do this by registering on the “Smart Traveler Enrollment Program (STEP)”. Here’s their website: https://travelregistration.state.gov/ibrs/ui/Don’t exchange your US dollars in the airport. I learned this lesson a while ago and while it’s convenient to do it, it will cost you money. The exchange offices in all airports give you a lower exchange rate so they can make their money.
The best place to exchange money is at a bank. They usually have somebody that speaks English and they won’t rob you. When exchanging at a bank you need your passport, not a copy
If you need a taxi and have to pay in dollars, agree on the price before leaving the airport. Most of the time there is a taxi counter or an agent of the airport that speaks English and can help you.
When I look at reviews the first thing I look for is “when was it written”. I don’t care where you go in the world, things change fast and if the review isn’t within a few months, they are probably outdated. I do read some of the older reviews also, but don’t put much weight on what is said.
I look to see if the writer was traveling alone, with a companion (couple), or with family. As a single male, and having traveled with a companion I know that my review would be different if I had to explain my companions’ opinion as well as mine. I was once told “Mike, you’d be happy in a mud shack”; so don’t expect me to say a place is a dump, unless it truly is. The reviews I write will be my honest opinion. If I have a companion, they can write their own review.
On the flip side, just because a review paints the hotel to be spectacular, be prepared, nothing is always as good as it reads. I stayed in the Santa Maria Inn and while all the reviews were great, and I agree the hotel was great, but nobody mentioned that you would need a car (or medium distance walking abilities) to eat on streets that are narrow, no sidewalks, and poorly lighted. But the hotel is nice and I may well return.
So, to keep reviews current and accurate. I post mine on Trip Advisor (http://www.tripadvisor.com/) , and Expedia (http://www.expedia.com/Home.htm). Be honest and provide as much detail as you’re comfortable with.
If you’re inclined to take your cell phone with you and intend on using it while you’re traveling in various countries remember this.
Unless you’ve got a satellite phone or want to pay high dollar roaming rates, you’ll need to have a compatible phone and chip. Not all cell phone carriers use the same technology (and chip).
I travel with a quad band, unlocked, phone (mine is a Nokia). When I get to a particular country I go to a cell phone company and have them put a chip in and see if it works. If it works I simply buy the card and minutes on their pre-paid plan
Until recently, as a tourist, you could not get cell service in Costa Rica. In planning for my recent trip (August 2012) to Costa Rica I found a website (Costa Rica Cellular Connection) where you buy a chip for your quad band unlocked phone and have it sent to your home before departing. I tried it and it works great. Their support during and after the sale have been great. If you need more minutes you just buy them from the carrier in Costa Rica.