So I'm coming from a half a year trip abroad and I have a ton of luggage with me. It really wasn't an issue with the airline because it was a 10 hour flight so it was all included in my ticket anyway. My only concern is with flixbus. I know that I can purchase extra baggage but I'm just wondering are they even going to check or count my luggage. I know it'll be obvious if I don't purchase any extra baggage at all but if I purchase less extra baggage than what I have with me, more like purchase one instead of two will it be a problem? I have taken a FlixBus before and they've never really bothered with baggage counting but then I only had one bag with me too. So basically if I bring two extra bags with me instead of one and only purchase one what are the odds of the bus driver stopping me, and what do they do in that situation do they not allow you on the bus? How does that work?

Also since I'm coming from abroad I won't have a US data plan setup so I was planning on using the bus's internet in order to communicate with my parents to pick me up from the bus stop but I'm not all that sure that the bus internet will suffice. Is it usually pretty good? For context I am taking the Atlanta to Greenville South Carolina bus.