Well, yeah, the beach is... what, a pretty early area in episode... I'm not sure. Not 1. Maybe 4? God, it's been ages. The ruins are the final area of Episode 1.
PSO1 didn't really have beaches. It had jungles though, both episodes 1 and 3 (2 was a card game).
As for PSO2, I think it was the start of episode 3 or the end of episode 2. By the end of Episode 3 you have planet Harkotan, which means we'd have passed it, while as you said, ruins are the end of episode 1.