You can also buy pins in a lot on ebay and have them just for trading (a cheaper way to start trading) - that’s what we do for our girls - we ALL love trading!
'Ohana is one of our favorite restaurants, love it & am trying to get it for our trip in a couple of weeks. Jiko looks great to me (but not to anyone else in my family especially). Artist Point looks good too!
We are not doing the Dining Plan (DDP), I did a comparison and it just isn’t cost effective for us for what/where we plan to eat. It can be nice, especially if you can get it free next year, for planning/budget to get it all taken care of though. But, totally not necessary.
Ask all of the questions you have - we are all happy to help!