It seems that there were a lot of included meals and I don't remember much about meals on our own except in Killarney and in Dublin, but I stayed four days longer in Dublin. If you do, don't miss the National Museum, not far from Trinity College and the Chester Beatty Library near Dublin Castle (one of the best meals I had in the country at their Silk Road Cafe). The National Museum is considered one of the best archeological museums in Europe. The gold jewelry and Viking displays are wonderful; there is a coffee shop where you could get soup or sandwiches.
If you follow the same schedule that we did, we had the afternoon free after seeing the Book of Kells at Trinity. The National Gallery and the National Museum are nearby. I wasn't too impressed by the Gallery but some in our group enjoyed it. Both have gift shops and the museum has a nice collection of books and silver jewelry (Viking and Book of Kells designs) ranging from low into $100s.
Our PD had a lot of suggestions for restaurants and took us on orientation walks in Killarney and Dublin. I ate with a couple of women in a small, busy restaurant that specialized in fish and chips in Killarney. Sorry, I don't know the name but the PD will. In Dublin we wound up eating in the cafe at the Camden Court hotel and some ate at the Pub next door.
If you're looking for sweaters, Irish hats, scarves, etc, Galway and Killarney have speciality shops and there is a wide variety of goods at the Blarney Woolen Mills shop in Blarney. We had lunch on our own in Blarney and I had a good lunch in a small hotel/tea room on the same street as the Blarney shop.
Highlights for me were Connemara, Dingle, Galway and Dublin. I would not have minded skipping Waterford; I don't know is there is a reason to stop there other than the crystal showroom. It was interesting but not worth an overnight to me. I would have preferred an extra day in one of the other cities.
Our hotel in Cork was a short walk to the English Market and many of us bought food and wine from a tantalizing selection.
Our home-hosted lunch in Cobh was nice and then we had time in the Heritage Center. I paid the small fee and went through the interesting exhibits. Gift shops there too.
If you are taking the Dublin extension, use the hop/on/off bus and don't miss Kilmainham jail. to Several enjoyed the tour of the Guinness factory.
It's a good trip and I'm sure you'll have a wonderful time. The evening at the pub was fun; I developed a taste for Irish coffee.