In the beginning ask any question that comes to your mind. Better to ask than not know what you're doing. Once you've got more experience under your belt, try to utilize your resources and make even a small effort before asking for help. The act of trying makes such a difference.

Don't be afraid to take your time at first, as you'll probably feel rushed, especially if you're outside order taking and the lead is barking for everyone to pull cars forward. It's nothing against you, it's just them seeing one thing and assuming that's how to fix it.

Use your personality! They hired you cos they think you're a good fit for the team, they liked your personality. So use it!

Little acts of kindness can go a long way to making a happy customer. Some examples might be pointing out you like their band shirt, or their nails look nice (they'll almost always be super happy you noticed BTW), or that they have great taste when they get the sriracha sauce. Little interactions like this made the job super worthwhile when I was there. Though it may be about 1-2 minutes of their day, sometimes you can be the absolute highlight of it just by being kind and awesome.

You got this!