For people who need yam seeds or any festival won item

[Scarlet824]

I'm sure other people have realized this, but I wasn't sure it would work until I tried it the summer of my first year. You can save the file on the day before the festival, go into the next day and see if he has the prizes you want. If he doesn't just load up the day before go into the next day and he will have different prizes. So if you can't get someone to trade yam seeds to you, you can always keep reloading until you are able to win what you need.