You will be lined up nuts to butts to get served and with people screaming EAT EAT EAT once you sit down. Last thing you will have time to worry about is hot sauce.
Yes,
An once through boot camp you would have to graduate from the DINFOS school at Ft. Meade, Maryland. Although to get that MOS/Rating is very difficult and most services don't have pure photographers anymore but you must learn all facets of Journalism, television production , and...
You will have to DEP drop from the Navy and then once you are dropped , you can go see the Army to sign you up. You have to tell the Navy recruiter that you changed your mind. They can't stop you.
They can make you wait on the DEP drop however, since they know the Army can't touch you until they do.