Gil’s Packing List:
You need a rain cover for your pack.
Wear treated wicking clothes.
Plan on washing a few things out along the way.
Not counting what I wear - I carry,
1 pair of pants,
a very light walking jacket,
a rain jacket,
gators (which is rain gear for boots),
one pair wool socks,
one pair silk sock liners.
2 liters water,
first aid kit,
maps, compass (you don't need maps or compass),
a very light sandal for night wear,
head band (it can get chilly especially if it rains and the wind blows, which is probably will).
You might consider a walking stick. I use one. It helps.
Regarding things and clothes you want to bring for your time in Dublin (concert attire is all black), but you don't want to carry on the pilgrimage, consider either checking it in the place you are going to stay in Dublin. Lots of places will let you check it (a tip or fee is expected). Or have it totted along the way by a Wicklow Way transport. The price is very reasonable. I have watched people carry too much weight on the walk. That is a mistake. Spending extra money to store or have your extra stuff transported will be a good investment. Your feet, knees, and back will appreciate it.
A couple more notes:
We keep the Vox facebook page active throughout the pilgrimage - so if you want to completely disconnect, your loved ones will be able to follow you without you needing to turn on your phone. However, there are multiple places with wifi access and international cell phone rates are becoming more and more affordable.
You do not need a sleeping bag for the Wicklow Way.