There are two salient points to consider. Firstly, there is no international air service from Nigeria to EYW (Key West Florida, USA). The closest is MIA (Miami International Airport). The second point is that the 'Conch Republic' does not possess sovereignty, meaning it is not a true recognised nation.
The 'Conch Republic' was a micronation scheme begun by residents of The Florida Keys which began as a protest against the United States Border Patrol. The USBP established a blockade on the only US Highway that led from the keys onto the US Mainland.
This action energised the local officials to attempt seceding from the US and declaring the small stretch of land in the keys as a sovereign nation. However, this was never taken to fruition.
Today the Conch Republic is a tourism strategy where tourists can purchase faux passports, participate in the Conch Navy (a flotilla of home owner's boats), and join in annual festivities.
You don't need a passport to travel between the UK and the Republic of Ireland.
No
If you are a British or Irish citizen you can travel anywhere in the Common Travel Area (UK, Republic of Ireland, Isle of Man and Channel Islands) without a passport. Airlines require photo ID, however.
You can travel immediately after acquiring a passport.
You cannot travel anywhere on an expired passport.
NO - although some form of ID is recommended and if travelling by Air, most Airlines now demand a passport- check before you book
If that travel document is a passport then yes you can. Without passport it wont be possible
If having a passport for 3 years from German it will not be good. You will have to get a new passport to travel to the UK.
If you are from the UK, then you do not need a passport to enter the Republic of Ireland, as they are within what's known as the "common British travel area" - allowing citizens of the British Isles to travel freely within the areas. However RyanAir may require a passport to prove that you are a UK citizen. Your best bet is to call RyanAir customer service and ask them.
Yes.
Yes
Yes, You always need a passport (or EU national identity card) to get in our out of the UK.