Except Snow and David didn’t go with Emma to save Henry at the cave?
Charming and Snow weren’t present at Skull Rock because they were collecting magic water from the fountain of youth so that Charming could safely leave NL to return with his wife, daughter and grandson to SB. It was so they could be together with their family.
[adrotate group="5"]
"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy