How much do these mugs hold? (Never stayed onsite before so never had or seen them!) What beverages are available - coffee and sodas only? Can you carry them with you (already filled) into the park or not worth it to lug it around all day? Just wondering if it's "worth it" to get them for a family of 4 or if it's best just to have sodas delivered by garden grocer. (Although I PREFER fountain soda over cans/bottles)
Our kids are 2 and 3. Can we just share a mug with them or is that a bit no-no??