OK, I've gotten through the 30 days of Princess Debut, which is in-game, not 30 days in real time. Here's what I feel about this game:
Princess Debut is a dating simulation entry on the Nintendo DS platform, but a rather outdated one at that --- totally ignoring more than 20 years of progress in this genre. You're placed in the shoes of a princess from a parallel world, who has escaped from hers because she has 2 left feet when it comes to dancing. Now the princess of this parallel world, you have 30 days to train for the big ball at Saint Lyons with a partner of your choosing. Usually dating simulations with RPG elements have a plethora of stats to tweak with certain commands (usually displayed in nothing more than words like 'study,' 'exercise,' 'rest,' etc.), but in Princess Debut, there are only Stamina (determines how often one may practice dancing) and Levels (advanced through acquisition of experience points --- stars in this case). There are as many as 13 locations to visit in the overworld map where you may meet different characters, but the characters tend to be a bit light on dialogue --- a real let down for dating simulations but I guess the game is targeted at little girls that may not have much more patience than little mice do. The meat of the game is in the dancing/training sequences, in which one taps and rolls with the markers on the touch screen. While exciting at first, when you consider that you will have to repeat these sequences as many times as you have stamina points, then you can see how this could get tedious quickly for 30 days in game time. As you gain levels, you earn more songs for a total of 10, and accessories which have no effects other than change the appearance of your character model.
Rent, or buy from a bargain bin, if you are a fan of dancing --- the video mode has camera angle options and dance steps to toggle on and off.