Make the Galway–Belfast change correctly
Day five ends in Belfast. Take the Galway train to Dublin Heuston, then allow the cross-city journey to Connolly and the wait for Enterprise. It is not a cross-platform connection. The Belfast–Dublin guide explains the stations for the final return.
Prepare the two-country trip
Ireland uses euros and Northern Ireland uses pounds. Check Irish entry requirements and the UK ETA rules for your own passport and status. The Common Travel Area does not give every visitor automatic permission for both countries.
Build the budget from nights and days
The day figures add up to €2,040.00 for one traveller before paid visits and extra journeys. A private-room line buys the whole room; divide only that part when sharing. These are chosen spending allowances, not available room offers or measured averages. Replace the stay amount with the full booking cost, including taxes and cleaning.
Add paid visits, excursions, intercity or inter-island tickets and airport journeys. The day notes separate accommodation, meals, local travel and small extras. The final day has no extra overnight allowance. The city budget cards are an alternative plan, so do not add them on top of this subtotal.