Trying to find an old K-Drama from memory! Help needed!

Recently, I was reminded of an old K-drama that I saw as a kid. But I couldn't find it anywhere by googling key themes of it. Leave some suggestions if you think you know what I'm talking about. It's been driving me nuts that I can't figure it out.

The drama came out in the early 2000s. The fashion in the drama would definitely be dubbed the "ugly K-drama fashion" period. If you know what I mean. I recall the plot is about a girl who goes to work at some sort of resort? Seems like it starts off with a snow resort and she gets transferred to warmer resorts later on in the drama. But she butts head with an arrogant and childish party guy. Turns out he's the son of the president of these resort she works at. Arrogant guy has a lot of trouble getting along with his widowed father at home. His dad surprises arrogant guy by dating again. The woman is also widowed with a son of her own. Her son is the main female lead's crush. Of course, her son is the exact opposite of arrogant guy. He is much more mature and intelligent. So together, there is a love triangle amongst the kids. The most memorable scene I recall is the female lead and arrogant guy goes on a date to the carnival with animal ears and tells each other to forget using their names and identities. And they just have fun and use the name of the animal ears they're wearing.