It's so exciting that you're planning on exploring the island this November! :D
As Bronagh from the Visit Derry office mentioned above, it shouldn't be too difficult to find accommodation without booking ahead, but since you're with four people, it might be a good idea to make reservations just in case. You can find all tourist board approved accommodation here
, and you can search by selecting the name of the town, village, city or area you would like to stay in.
I definitely recommend booking ahead your accommodation for your first and last night so you're sure you have a place to stay when you arrive and when you have to travel to the airport or ferry again. Take a look at the Reservations in October
and Book accommodation in advance
threads for more helpful resources, tips and information.
Have you planned your itinerary yet, or are you thinking of travelling where the road takes you? :)
Feel free to reach out if there is anything else you need, and keep us posted on your plans!