Snorkeling safety with kids

Headed to Maui with the family in mid-October! Kids are 7+9. Not crazy strong swimmers, but they've done swim team multiple years, so they're better than many kids. We're doing 5 nights Ka'anapali (Honua Kai), 3 nights Wailea (Wailea Beach Resort).

Feedback on how to safely snorkel offshore with them? We don't plan to go on a tour. I prefer the idea of snorkeling off the hotel beaches/visiting other nearby beaches. We'll check the online reports for feedback on water/clarity.

Do we use lifejackets for both? Fins? Floats? Type of mask? We're open to purchasing supplies ahead of time and bringing them, or renting them there. If renting, I'd love a shop that may have two locations - so we can pick up in Ka'anapali and drop off in Wailea or close to the airport, if possible.

I've always heard to definitely wear lifejackets for the kids, but I also fear that they may just float out to sea? 😂 Advice from experienced family snorkelers welcome!!