AC Suction Service Port

Answer-
1. The factory stuff was silver-soldered, or brazed, sometimes formed w the end, not a regular solder joint. Big temperature difference and slightly different process. This was done before the hose was crimped. There are various services to replace the hose with barrier hose for the 134a, could have saved you the trouble. No brazing is required.

2. Pics would help, but I suspect you are referring to the expansion valve compensation sleeve. That is not a service port. It's about maybe 1/8", 3/16 i.d. or so?