It's neither pet...where you are looking for is where JK first read HBP...

Or go to the website that we've visited a few times already in this quest and take a look at some of the places you visit on the trips....

look at the main page for this quest!

Now I can be pleased with myself - got it squick like snitch If onyone still guess - look for Gala dinner place in the Trips!

A little addtion to the remarks from Iflores, if you are going to leave a hint, please be subtle!

hpquestmaster gave everyone the biggest clue there is. It ties in with the fantrip. Go read the first page on the fantrip site, answer is plain as day

i found it by looking at castles listed in trip info