I am staggered by the responses here!
You are obviously not unreasonable to find it too cramped. That's a question of size, preference etc.
Wouldn't bother me, but if you (like countless others on here) felt it was too cramped for you to be comfortable dining, then obviously that's a totally valid view.
HOWEVER, unless the waiters put a gun to your head and insisted you ate there, I am absolutely failing to see what the restaurant did wrong.
They offered an experience you were able to see and evaluate before you sat down. You chose to sit down, order and pay for your meal.
How on earth are they in the wrong?
That's like paying for a go-karting session, then being pissed off afterwards as you don't like go-karting.
If you felt unable to say to your partner that you didn't want to eat there - then you have a partner problem, NOT a restaurant problem.
The restaurant are entitled to run their business as they see fit. And in a way that is generally profitable for them, I assume. They aren't doing it as an act of social justice, after all.
It's the free market, man! You get what you choose to pay for.