That would be an easy choice for us, we like to sit down for a proper meal every evening. Also main reason we choose OKW over a moderate, similar price but includes regular DDP.
I prefer not having it, we have done 3 trips 1st with DDP, 2nd just qs and 3rd trip a mostly qs with a couple of ts and I preferred the trips without DDP however if it is free I will work with it. I booked SSR as that is where my daughter wants to stay.
My daughter loves ddp because she can have an ice cream every day but doesn't like it when I say we can't go on test track because we have an ADR to go to.
I would not pay for it because I would feel like I would have to get good value out of it, if it is free I feel okay using an ADR at Plaza restaurant or 2 adrs for a signature.