Have you considered calling the locating service, get them to mark the entire yard, and then taking pictures so you know areas are okay to dig in going forward? I’ve been considering doing that for my yard just so I know where I can safely landscape.
Depends on where you are.
I’m in the Midwestern United States now, where summer is often pretty frustrating due to the high humidity. But I’m originally from Phoenix, where I really enjoyed summer (in the shade), because I love the feeling of warmth soaking into my bones, and I never got sweaty.