I don’t think it’s as likely that the Feds break this strike like they did with the railroads. Their argument against the rails was that almost every other industry relies on them to move product, while having fewer new cars will only effect the new and used car markets. With however hundreds of millions of usable vehicles that are already out there, this strike doesn’t really have the same opportunity to spill over to the larger economy.
For easy drinks (beer, wine, or simple liquor/ soda mixes), $1 is fine. If they have to bust out a tool like a muddler or peeler, you should probably give more than $1.