Question regarding EULA and Steam Playtest

Hello!
Development of my game is going great, to a point that I decided to enroll with Steam’s playtesting programme. So, my question is - Do I need to have EULA for using unreal engine ready for playtest build? Or to register my game via Epics website? Ofc all of those things will be done for full release, but I wanted to gather some opinions first. Obviously, playtest build will be available free of charge.
Thanks for the replies!