Jason, have you ever actually met your own girlfriend? It doesn't take much to get her excited. Of course such a show of generosity (on the Jason scale, at least) would make her ecstatic.

She only stops bombarding him with kisses so that she can enthusiastically demand brochures, because of course she wants to see them -- if he lets her be surprised, she might tackle him while he's driving them up to the cabin and kill them both. "I want to see!" she squeals, and she's making so much fuss that Marcel (wearing a pair of doggy pajamas and four tiny doggy slippers) skids to a stop in the doorway and yips at them both, hopping up and down a little bit.