The hotel loads are the overnight loads, like lights TV, fridge if you have one.
depleted batteries can suck up a lot of juice from an alternator told to seek high voltages.
But 80% to 100% charge takes time, and from 95% to 100% takes little amperage, but at least an hour. This is where solar is really good as it has the time to do so, silently, and that last 5% is important.
Having the alternator offset the cooking loads on teh drive home is a good strategy, if the alternator can keep up. Solar is a batteries best friend, when either there is enough solar, or enough time after other higher amp charging sources bet teh batteries from xx.x% to the 85%, where the solar can then take over and hold absorption voltage until the battery is indeed full