Stainless steel is stainless all the way through, it's not a coating so areas that you cut should not rust. As for seasoning I would just clean it thoroughly with soap and water.
Lang 36 patio
18.5" Weber Smokey Mountain
22.5" Weber OTG with Cajun Bandit Conversion Kit
Char-Griller Akorn with side cart
1999 Weber Master-Touch - bent but not broken
14.5" Weber Smokey Joe Silver