I also have to say, I’ve seen this “not guaranteed to be seated outside” thing come up on several threads.
But honestly, I am pretty sure they’ll accommodate you if you check in and very pleasantly and politely say something like, “We don’t want to be a problem, but we chose to eat here because of the outdoor dining, which is where we’d like to be seated for health and safety reasons. It’s very important to us, and we are prepared to wait if needed.”
Even if they respond back that it’s “not guaranteed” because that’s the official line, I have a hard time imagining them responding to that by taking you to sit at an indoor table. Unless they’re just in some kind of chaos/crisis mode when you arrive and someone’s not paying attention…