We’re doing Dublin -> London -> Normandy -> Paris on this trip. Maybe our next one will be a cruise but my husband wants to take the ferry across the English Channel. We’re working on our buckets lists, too, which is why Ireland (me) and Normandy (husband) are on this trip.
I've been to Ireland 18 times from 1985 through 2019, mostly golf trips to all points around the island, but the first two times when I was a 30-somethin' backpacker. And on those golf trips, we always spent as many days touring and meeting people as we did on golf courses.
As for your wish to experience Ireland, and as much I love Dublin, if you really want to satisfy your Ireland itch, stay away from Dublin on your next trip and drive a car, take trains, buses, whatever means you have available to get around. Go to Donegal, Northern Ireland (my family's ancestral home), County Kerry, pretty much anywhere, stay in B & Bs and not hotels, and get in as many conversations with the Irish as possible.
By all means, although it'd be the temptingly easy way to go,
do not take a tour. Bone up on Irish geography, its history, and take your time deciding where to go and what to see.
It'd be well worth your effort, Nan, and I'll bet your husband would love the trip, too.
In the meantime, Nan, have a wonderful trip upcoming. Travel safely, and enjoy every minute. Slainte!