I never felt comfortable as a preacher. Came to the conclusion that the best (and maybe the only) way is by the example, you know asking if they accept and tip generously when they do.
But life’s easier among the ones who gets it. For instance I started to use business that accept gift cards like nostr:npub1m7r9aayrqjtt2q0whkyrwlys75s5d828c5uewvqwyfd2kxefkfjqgeny2w or nostr:npub1j9qyxka5lck4tw50v7qfrs6gdwczz5ydt7ugqy6nhuva9p6dpy5q8rs2yg's #cakePay. And it feels good