That sounds like an exciting trip you have planned for next spring! I hope your seniors group will enjoy Dublin as much as your students did.
First of all, The Heritage Card can be a good investment if you plan on visiting multiple museums and heritage sites. You'll find a full list of included attractions here
. In Dublin, you'll get entrance to Dublin Castle and Kilmainham Gaol with it (note that you will still need to book tickets in advance for the latter, as the attraction is quite popular). You can also visit Newgrange
(reservations needed) as well as the Glendalough
Visitor Centre, which aren't far from Dublin. For 30 eur/ heritage card (Senior price), I think it's worth it if you do a few attractions.
Besides the Heritage Ireland attractions, some others popular attractions that offer senior discounts in Dublin include the Guinness Storehouse
or Trinity College
In terms of senior-friendly attractions, Dublin has many options. The National Gallery of Ireland is known for its art collection, and it's easily accessible (even though your group seems active enough). St. Patrick's Cathedral is another iconic landmark with beautiful grounds, perfect for a relaxing visit. The Chester Beatty Library
(free entrance) is also senior-friendly, offering exhibitions, guided tours, and a lovely rooftop garden to enjoy.
As for connecting with local seniors and community centers, I would recommend reaching out to the Dublin City Council
or senior activity centers in the area. They might be able to provide you with contacts or suggestions for organizations.
Let us know how the planning goes and I hope you and your group have an amazing time in Dublin!