Well the main question is how far away is your trip? Currently there are no BOS-AMS or BOS-CDG flights on Delta metal. Not sure when service will restart, but nothing is loaded for July except one on KL or AF metal.
Skyclub in BOS at A7 is open with limited features - wrapped/bagged food, some beverages at the bar but not the normal full selection.
I think you have better odds of the in flight experiencing being better the more time there is until your trip.