My DD (4) had a friend (also 4) and his grandma over recently. Friends Grandma said a couple of times how it's always easier to look after 2 at once because they entertain each other...
I did not find this at all! They argued, we had to meticulously divide the Lego pile, and we attempted a board game where they both gave up dramatically after about 1 minute. We went out, they ran off shouting and laughing and refusing to come back. The friend called his grandma and DD a poo poo head, and DD called me a poo poo head (not something she'd ever do normally).
All in all it was a tiring afternoon and definitely not easier than one with just mine! The kids both request to see each other all the time though. Is this what playdates are usually like at (only just) 4? Is it an age thing or a personality thing? Parties and trips out are usually fine.
She starts school in September so I'm feeling quite nervous of having school friends over! Please tell me it'll be better?