Just the basics...quickly!
Be able to ask for and understand directions, book a ticket, order a meal, and talk a bit about your family. Survival Spanish. Memorize these cards before you leave on your trip.
Quick Verbs with English Translation (PDF)
Essential Vocabulary for Travelers (PDF)
Hint: If your printer duplexes, use that function when you print to ensure that the front and back sides match.
Or: Manually duplex by printing the odd pages, and then setting those pages in your paper feed to print the even pages on the other side.
Or: Writing by hand one side of the cards is a good way to practice too!