Yes they do ! Just the same as British people need a Passport to travel outside the UK - so do Irish people !
Generally you will need a passport to visit Ireland. As a general rule, you should always get a passport when travelling internationally. The fact that you grandmother is Irish, does not mean you can travel to Ireland without any passport. You may actually be entitled to get an Irish passport. See the related question below for details of documents needed to visit Ireland.
No
Yus.
yes
Passports are needed for most citizens to enter countries around the world. Irish nationals who are visiting Jamaica do not need a visa, but do need a passport to enter the country. Grand Cayman requires a passport and a visa if the trip is going to be beyond 10 days and its for business or 60 if you are on vacation. Mexico requires a passport and no visa if the visit is less then 180 days. Haiti requires a passport but no visa if trip is less then three months.
No just your passport.
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what are the requirements for south african passport holders visiting mauritius
No, Nepalese citizens require a visa to visit Bermuda.
Indians citizens need a second passport while visiting Israel since it is not recognized by other 32 member-states nations and it discourage the use of stamps that are stamped permanently. the duration is just few weeks.
No, they don't. People from most European countries just need their passport to enter Mexico.
Canadians do not require a visa to visit Gibraltar for short stays, typically up to six months. However, they must have a valid passport and may need to show proof of onward travel and accommodation. It's always advisable to check for any travel updates or changes in entry requirements before planning a trip.