What is the fine-grained topic of the following text: So we went out for lunch, and wandered along the beach, talked to each other about things other than houses, and generally relished being somewhere we didn't have to decorate (as it happens, the wallpaper was peeling off in places, but since that wasn't our responsibility I gave it no more than a passing thought). Only return the topic.
Spending time at the beach and discussing various topics