[2023] Early Access Rewards

Hello r/PlayTemtem! This is my first post here, and I have a couple questions regarding Early Access Content.

I bought Temtem on day one release on Steam, back in 2020. When Temtem released to the public, were there any EA rewards that were given out? How do you obtain them?

Secondly, I want to delete my save, as I have no idea what I'm doing, + I want to start over with my current partner. If I were to delete my save, would I still have access to the EA content, provided that there is some?

Thank you for the help in advance!