Dons de la nature is said to be a quality restaurant, but when I ate there before, the steak had several grilling issues that seemed to have been caused by insufficient technique by the chef.
If you are planning to go to either one of the two now, I would recommend vesta.

The menu does not change whether it's lunch or dinner.
In general, the restaurant's style is to put together a menu for you through conversations with the staff.
I don't believe that there is any particular need to reserve any requests or courses in advance.

Thank you!

If I had to choose just one restaurant, I think I would choose Aragawa. Obviously, Vesta is also superb, but I feel that the quality of the Wagyu served there along with the Rokama oven grilling techniques are slightly under the standards of Aragawa.

Gotcha. Thanks a lot!