No, I absolutely would not patronize a restaurant that refused to serve a lesbian couple. I'd probably write about what I witnessed on sites like Yelp too.
That being said, OF COURSE I have to "tolerate" that other people may have different opinions than my own...even hateful ones.
"You're allowed to say anything you want, or hold any opinion, as long as it is not discriminatory" That last part is dead wrong. Making discriminatory statements is NOT illegal at the state, federal or local level except in very specific circumstances.
Your grasp of the US Constitution and basic federal law is shockingly poor. And yes, you ARE intolerant. And no, you clearly do not embrace diversity. You embrace people who agree with you. That is NOT tolerance.
ETA: "Oh boy, you are quite the hero in your little fantasy." No clue what you're getting at. I never said the restaurant owner should be forced to serve them. I simply won't give them my money. Signed, lesbian libertarian. Unlike most dems and cons, I actually appreciate FREEDOM.