The best part of the museum is the chicken ramen factory, which you need to make a reservation for in advance. It is NOT the cup noodle factory.

Cup noodle factory: no reservations, draw on your cup, specify what toppings to put in

Chicken ramen factory: make ramen noodles from SCRATCH, send them off to be fried in front of you, draw the packaging

It's really worth the price of admission (1000 yen, maybe $6 USD) for the experience of making ramen noodles from scratch