To save some coin, you can purchase a DoDublin hop-on, hop-off bus tour and Dublin Express airport bus combo ticket (you can purchase fares on the airport bus without buying a DoDublin Card).

Or hop off at Wickham Market to walk through the Alde Valley to Saxmundham or over to picturesque Framlingham, home of Ed Sheeran’s “Castle on the Hill” (this requires a bus ride back).