Language
Finding your way around Greece without speaking a word of Greek is certainly doable (and it's been done by millions of tourists before you). Especially in areas and industries catering to tourists (such as airports, hotels, rental car agencies), you should have no trouble communicating in English. Many hotels and resort areas also cater to guests who speak Turkish, German, or Swedish as well.
The first challenge of the language you are likely to face is the alphabet. Most of the road signs are written in Greek and Latin letters, but just in case, we’ve included the Greek version on this website. Some places like Μυτιλήνη can be transliterated to Latin letters in multiple ways, so you’ll see Mytilini, Mytilene, Mitilini, etc. If you get lost and need directions, younger people are more likely to speak English or at least be less shy about it.
This all said, it never hurts to know a few words and phrases, so we've started compiling a list. Let us know if there are more phrases you are curious to know. You can also play with Google Translator, which allows you to listen to the pronunciation to go along with whatever you translate.
English
Greek
Pronunciation
bride
νύφη
nífi
groom
γαμπρός
gabrós
yes
ναι
ne
no
όχι
óhee
please, you're welcome
παρακαλώ
parakaló
thank you
ευχαριστώ
efharistó
hello, goodbye, bless you
γειά σου
ya sou
good morning
καλημέρα
kaliméra
good evening
καλησπέρα
kalispéra
good night
καληνύχτα
kaliníchta
congratulations
συγχαρητήρια
sigharitíria
It's nice to meet you.
Χαίρω πολύ.
hiéro polí
What is your name?
Πώς σε λένε;
pos se léne
My name is...
Με λένε...
me léne
water
νερό
neró
red/white wine
κόκκινο/λευκό κρασί
kókino/lefkó krasí
cheers
γειά μας
ya mas
Where is the bathroom?
Πού είναι η τουαλέτα;
pou íne i toualéta