Yeah, accurate caption is accurate. Louie definitely regrets signing up for this. However, Louie isn't so self centered to recognize that if he's a dick about it, he's going to ruin it for his friends. So he's pushing through and fulfilling his obligation but, man, he can't wait for this to be over.
On the doing his part front, he's learned his big song. He's struggling with the dancing but he's committed to extra rehearsal (ugh) with Tandy so he can get better at it. He also is having a hard time really selling the whole...being in love and wanting to get married, thing. His and Tandy's characters are only twenty. WHO WANTS TO GET MARRIED AT TWENTY?!?