Charging 6v golf cart batteries?

Thank you. Thinking through the scenario, if I'm plugged into shore power (since my batteries are charging), wouldn't anything I use in my camper be using shore power and not the battery bank? So my batteries would be doing nothing except charging?

Or am I thinking about this incorrectly? I'm new to campers.

I'm willing to buy a new/better charger if it would make my camping life easier in some way. Thoughts?