I got tickets for Bruges and for Dublin on the Friday very easily.
I have since seen tickets for these venues being advertised as 'sold out' or similar descriptions, and being offered on Ebay at inflated prices. A few moments ago, I tried to buy tickets again for both venues, and both were available still from http://www.sherpa.be. and Ticketmaster
Just a thought then, before you commit to inflated prices, check the official vendors, you might be surprised

Good luck