M.B.
Congrats on your first little one! I personally did not use these features. I love the changing table and that's really all we have used it for so far. My daughter is 4mos now. I got this pac-n-play for a baby station downstairs. She took a few naps in it when she was an infant but i put her in her crib for all her sleep now. She didn't really care for the vibration, i was more excited bout it then she was. The music doesn't go that loud and the light doesn't do much at all. If i could lay it with the vibration on then i might get more use out of it!! Hope this helps. Good luck! ; )