does Royal Carribean leave from here?

Yes, as does Carnival. You won't find the mega-ships in Baltimore since they are too large for the port to accommodate them.

Only Carnival and Royal leaves from Baltimore.

Yes. Grandeur of the seas

Yes every Saturday

Yes. Very efficient and convenient

Yes

Yes. Port of Baltimore. 95n last exit before the tunnel on the westside of Baltimore

Yes I left here on the grandeur of the seas just last month!