Yes
Does a Greek passport holder need a visa to enter Dubai?Read more: http://wiki.answers.com/Does_a_Greek_passport_holder_need_a_visa_to_enter_Dubai#ixzz28B1cn400
Yes, you will need to show your passport.
Not unless you need a passport to visit Weymouth.
No, but you will need a passport to get back into the US.
You need a passport to go anywhere.
Yes, you need a valid passport to visit the Grand Cayman Islands.
Although both Greece and UK are in the European Union you still have to show an up to date passport in and out of both countries.
No they just need a passport.:)
Yes, you need a valid passport to visit Grand Cayman, which is a part of the Cayman Islands.
Yes, you do not need a passport to visit the US Virgin Islands if you are a US citizen.
For a Greek citizen: identity card or passport.
Yes