We had budgeted for the wedding and budgeted for the deposit. And could afford both from our savings. Now the goalposts have moved. The wedding is already fairly simple by Irish standards.
What is simple in money terms by Irish standards for a wedding?
Could you postpone the wedding, buy the house, and then have the wedding.
It might actually be an idea to do that and borrow for the wedding, which I wouldn't normally suggest, but depending on your figures it might make sense.
You sound like a very sensible young lady, I have no doubt thing will work out for you. Good luck on the preparation of your big day and in the meantime just carry on saving.