In early sobriety it's crucial to have an escape plan. That often means having a separate form of travel to events, such as bringing your own car, or enough cash for a taxi, or money/tickets for mass transit. And, being prepared to leave when the situation feels uncomfortable.
They all broke their promise to you: so that was a deal-breaker: leaving politely saying you "aren't ready to be around a lot of drinking" would have been totally acceptable.
Or less honesty: feign a headache or a fever coming on.
Nothing is more precious than our sobriety and lots of us found that we had to have a complete ban on being at drinking events.
I have a few years of sobriety now and I can handle being around drinkers and alcohol. But in early sobriety, I was too fragile for that and I did not accept most invitations. And had my escape plans, which I used on more than one occasion.