Hi,
Thanks for getting back with some more details of your plans!
When traveling by coach you will not need child seats so this will indeed be the best way for your kids to get from Dublin to Belfast.
Bus Éireann operates a service from Dublin Busaras to Belfast Europa that would be perfect for you. Please have a look at their website for detail, they operate a rolling timetable so dates in August are not available to view just yet.
Dublin has plenty to see and do to keep you all busy, easy to walk around or take the
hop on hop off bus to visit all the major attractions. There are also lots of smaller
towns and villages nearby if you fancy getting out of the city too.
Once up in
Belfast, again the city has plenty to offer and also the
City Sightseeing bus to take you all out to some of the great places along the
Causeway Coastal Route.
It would also be a great idea to take a journey over to
Derry~Londonderry while up along the north coast. A popular thing to do is a walk around the walls and over the peace bridge.
Translink operates the train and bus service in Northern Ireland so again, check their website for details of times and tickets.
We have an
approved accommodation search page that you may also find helpful. I have pre-selected Dublin to get you started, please feel free to change the type and location from the drop-down menus.
I hope this helps and that you have a super time at the wedding and your time with us is enjoyable.
Again, feel free to get back to us, hopefully some of our fellow members and industry partners may have some suggestions too.
Regards,
Martin