Wendy, they do fine with the mani and pedi's (prices are higher than you'd pay at home but at least they know how to do them). Fills? forget it! If you're on a 2 week cruise or so you can squeek by without needing a fill but for 3 weeks or longer you need to resort to either having them done on the ship or in a port. Most people I know that need to get a fill get them done in a port for a fraction of the price and a better job. If I could only grow my own nails I wouldn't have to worry about it!
Now maybe because there were so many complaints about "fills" they sent the gals to school to learn how and it has improved?? I hope so!