Westy 12 is awesome, a Belgium co-worker brought 4 back to the states several years ago. I drank one gave one to my brother-in law and kept the other two for a special day (daughter's wedding maybe). When I traveled to Belgium for work about 9 years ago they had this whole process you had to go through to get the beer so I did not make an attempt to get any, is it now available at stores in Belgium?
When I visited, my Belgium counterpart took me to Brugge, we went to eat dinner and I told him I wanted to try as many different beers as possible,he asked me which one are you trying first, I saw a Kriek I wanted to try and he informed me that he would not allow me to order it, he told me everyone in the restaurant will think I'm gay (NTTIAWWT). So I ordered a Westmalle Tripel, and a stew made with Westmalle.
Enjoy your trip, and the many beers.