Here are some things that Screenhog posted on what to check out while the medival party is still going on:
*The lighthouse beacon has become a big bonfire!
*The mirror at the ski hill tries to answer your questions! Just ask your question and move your mouse over it!
*The second floor of the princess castle has a fountain with Koi in it... just remember to feed the fish!
*If you go to the Gift Shop market, you'll see a special Medieval Party catalog (including the player card background chosen by you).
*Medieval snowball fights in the Snow Forts! You don't see contraptions like that every day.
*The treetop fort in the Forest. Looks like some puffles have made their home in it.
*The huge, red dragon in the Mine. It's controlled by the Switchbox 3000.
*The Smithy where the Boiler Room was (if you can't find it, just ask a passing blacksmith).
*The Book Room has been turned into an old library, with scrolls everywhere!
*There's a bouncing wizard's hat in the lighthouse. If you haven't gotten your wizard's hat yet, I'm pretty sure it will give you one if you ask nicely.