"We have to behave with other people as we would want them to behave with us"
well, i don't agree with this idea, in principle. rather, i think we need to treat people in a way that is reflective of the way they've already treated us - we should not be naive, and allow people to take advantage of us, in the hopes that they may change. they probably won't.
a statement like that coming from somebody that's supposed to be a socialist is actually rather disconcerting; it's an almost literal statement of the hard-right "golden rule", as pushed by backwards idiot christians.
that said, i would want those bar staff to accommodate my request for a larger seating area. by not treating me how i want to be treated, the bar owners are opening themselves up to reciprocal behaviour. it would follow that if the bar owners want to be treated with more respect, then they should treat their customers with more respect and cater to their requests to put the tables together.
if i was in that situation, i would not blame the staff, though. the staff are just doing their job. rather, i would bring the manager over and yell at them, as it's their behaviour that is not reflecting how i'd like to be treated.
in all likelihood though, given the circumstances, i would probably choose to avoid conflict.
here's what you do if bar owners want to get pushy and enforce bullshit laws on you.
1) ask for the manager.
2) calmly and tersely explain that you are taking your business elsewhere for the precise reason that they are enforcing the rules. that way, they know the reason for their loss of revenue; they understand why they're losing business.
3) write an informative review on the company's website that this establishment is enforcing questionably valid rules and if you don't like that to go elsewhere.
4) find somewhere that is more reasonable.
5) tell your friends about the more reasonable spot.
yelling at staff, who are underpaid and overworked, doesn't help.
go after the bar owners, and go after them where it hurts.
https://vancouverisland.ctvnews.ca/b-c-premier-calls-restaurant-patrons-idiots-for-abusing-staff-over-covid-19-health-orders-1.5053892