You may be just fine, but keep an eye on the "guess-o-meter" which will show your remaining range. It generally takes into account your recent driving style and weather, but on a new car, it may not have good information. But still, if you're not near home and it's getting below 20%, you'll want to charge.
Personally, I'd map my route and see what Level 3 chargers are along your planned route, using A Better Route Planner. The Bolt may have some mapping info built in, but IME, you don't want to mess with new tech after an exhausting day at a dealership.
Make sure you know how to initiate a charge, and how to stop charging. At least with my Niro, the charging cable locks to the car while it's charging. It may be different for the Bolt, but unlocking the car allows the cable to be released.
The Bolt has, I believe, about a 65kW battery. You'll never want to run it down to 0, and when public charging, you probably won't want to wait around for a full 100% charge (it slows down at 80% to preserve battery life). So if you charge from 20% to 80%, you'll probably pay for <40kWh, or, at that price, about $22. You really won't need that much, especially if you have a way to charge at home.
Charging at home, at least where I live, is far cheaper. We pay .12 per kWh. General recommendations are to charge to 80% most times, and to 100% about once a month for best battery life. I don't know if it really matters, but that's what we've been doing.