Hi ya i have no idea about the era or style But antiquing paint techniques would unify them Here are a few images Some look more rustic than others Which do you think would work for your needs?

for a pair, that's a good price. I've seen similar ones for 1100 each. I think Houzz has those exact chairs at 600 each? as for the drinks, use coasters. and a placemat. seriously. When you use wax for the finish, any water that hits it is going to leave those 'waxy water rings'. that's just the nature of the wax finish. so, use coasters, or use the glasses that prevent condensation. the kids are old enough to learn to use coasters or to be careful. and if they're not, then maybe you need a diff material for your table! (although, I have one too so I get it) Just keep the placements handy

Given the overall ambiance, I’d concentrate on working more with it than solely being focussed on the chairs. Suggest a rustic/modern wood table and to complement chairs, a black metal base. Change the seat cushions to a more relaxed, fun look and duplicate in your seating area. Don’t forget a fun chandelier over table. It will be such a welcoming area. Found this table quickly on Wayfair Pottery barn chandelier example, but this style can be found at lots of different price ranges (try Ikea). https://www.potterybarn.com/m/products/flora-aww-indoor-outdoor-pendant/?cm_cat=10078&irpid=10078&irgwc=1&cm_ite=subaffiliate&clickid=yMEXl5QObxyOW74wUx0Mo38vUkiW8LwO81OyRQ0&cm_ven=afshoppromo&bnrid=3317500&epik=dj0yJnU9N3ZHdUJMMXM3VFVjMWo5U25SMUpBRG9DZUFXdjVpOFUmcD0wJm49T3R4aC1ybS01bE5YZktJWWxFTHFZZyZ0PUFBQUFBR0psdk1Z&cm_pla=ir#viewLargerHeroOverlay

Ok, that info really defines what you might want to be looking for size wise. And, you’ve identified a possible space to store the table when not in use. It looks like you do use your current table for desk type work - looks like a calendar book sitting at a space. Maybe the way to approach your project is to measure the wall space so you know max width of table that would fit there. Start your online search looking for that width of fold down tables with casters / wheels for easy moving. Think about if you would use a table that could provide a work space for things like the calendar & maybe one chair could sit at an extended piece or leaf of table. Also, you said 3 at most so plan for table to seat 4! If your kitchen counter has an eat at bar, you’ve always got extra seating there. Wanted to say that your copper wall hanging over the audio system unit is beautiful.