Dublin: after 2 days we were ready to leave and did. I thought the city was dismal. The most interesting things we did were the Guinness tour and the Trinity College tour. We rented a car and drove the coast - absolutely beautiful and full of more interesting small towns.
Key West: we were expecting a Carmel, CA type of place. It was full of loud bars and tacky souvenir shops. Other parts of the Keys are much more interesting.
Plymouth Rock: circled the area for an hour, expecting to SEE the rock from the road. When we did find it, it was in a pit in the ground and about the size of a dining room table. It was laughable.

Arizona. Not desert people. Found it dry and hot as hell. 115 degrees and a dry heat. Just god awful. Lots of very rich and very poor all living in the same town with some hanging off the rocky cliffs and some just down in tin huts. Just not my kind of place.

I thought Rome had lots of great sights to see but also lots of tourists and scam artists and so on.
Milan was just not a place I would ever go back to.

All the downers on Dublin! I will be there for 4 nights in October plus 8 in the rest of the south and west! Hoping I can enjoy our 4 nights!

Paris... did not live upto the hype at all.

Definitely underwhelmed by Dubrovnik. While the city itself is beautiful they haven't done a great job managing the huge influx of tourism due to GoT. It's a very small city so there isn't actually a ton to do except visit the ramparts, which are also quite expensive (I think it was ~$40/person to walk around the rampart).

I love Amsterdam, four visits in, and never once bothered with red light district (wouldn't bother in my own city either!!) not interested in pot either, go figure. And you hate Australia, that is one big place to hate... as silly as saying you hate USA, I would say!!