Bag service/transfer

We are planning a trip to Florence in June for a marriage. After the marriage we are flying from FLR to Zurich/Interlaken for a week and will take trains from Lucerne to Rome. We have a suitcase that’ll contain only wedding attire and are wondering if there is a bag transfer where we can drop it off in FLR and pick it up in FCO or a hotel in Rome.

I have searched online but not sure if some of those services are reliable.

PS: some poor planning led us to book our tickets from FCO to JFK.