Not only the route, but what was up with the hotel? Did the airline pay for that room? It seems like the writers were trying to pull an idea from the "Martin" episode where Gina, Martin and the gang were going to this resort and ended up with this hooked up trip from a cereal box.

Then, Martin and Gina encounter that big azz rodent.
Whatever. I did like the part where the other friends realized why Joan is so "over the top at Christmas". They have too much access to her house.
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