I'm with Lalisa! 3 in-laws to stayover when I'm a new mum? I'd be out on a metaphorical aquazip too. Relationships with in-laws are a confusing mash-up of intimacy and ignorance. 
Plus Lalisa is a Romantic soul. Hiro may be "doing it all for the family" but, since the children have been born, he's totally ignored Lalisa's Romantic nature. She's seriously in need of a date-night.
I'm impressed with the gold play-date. My families either never have time or don't know any other toddlers. They're all lovely of course.
Hiro & Lalisa interact romantically everyday, both spontaneously and with Watcher guidance, but I don't do screenshots of that.
She gets Hiro's romantic attention, but it's just that Lalisa feels her daily life to be boring.
As a snob, she also feels she should be served by domestic servants, but the Misturas don't live that way.
Hiro hasn't really had time to spare for dates, since Lalisa didn't help with the kids much while he worked.
Er, another reason Watcher sent away the in-laws is that, although Lalisa & her father-in-law Kazuma, have Bad Compatibility, they'd started developing a pink relationship.
Since you defend Lalisa and blame Hiro, you'll probably dislike where the story is going. *winks
Playdates are an easy social event, except that the grownup host (Hiro in this case) needs to go around and introduce themself to the potential guest toddlers.
That didn't take long--Stella's twins and Yuki's triplets. They only need to be acquainted.
I haven't had much success with toddler playdates - either I forget to make sure the parent "knows" the toddlers, or I forget to choose a place that is not too big, and they toddle all around but it takes so long to get them together in one place that they don't complete the tasks. Getting those seven toddlers together to read to them all seems quite a feat.
I agree with Karina - those speedos are a bit . . . distracting.
I've had that happen a couple of times with the missing tooth - suddenly I notice it, but didn't see any kind of message about it.
For the event venue, I use a 40x30 park that I built specifically for toddler playdates back when toddlers first came out.
I've had to replace a few things recently after downloading it from Gallery with newer items, like the Fantastical Tent.
For Hiro's reading to toddlers screenshot, he simply sat down and chose "Read a book to..." for all eight toddlers.
They all eventually waddled over to where Hiro was seated.
What I like about toddler playdates is that they present a great opportunity to showcase the cousins of the active household's toddlers.
