A fully proxied Commander deck needs two separate conversations: whether the table accepts proxies and what kind of game the deck creates. Here is how to cover both without delivering a pregame TED Talk.
Bringing proxies to a local game store involves three separate questions: what the event permits, what the store allows, and what your pod accepts. Here is how to handle all three without making game night weird.
A practical 30-second Rule 0 script for discussing Commander proxies, expensive staples, deck power, custom cards, and store or event restrictions.