Hmm....currently I can only imagine he didn't know much about dating and only briefly heard it through Yamcha and Bulma but he was still confused.....so I think he would let Chichi decide or take charge on what they should do. Then I can imagine Chichi would suggest that her and Goku would drive around in the motorcycle 🏍️ (based the the motorcycle Gochi pic) IDK to me that pic always looked like a real first date pic. I know there was this episode where Chichi considered their play fight where Goku slams his fist onto a tree their first date...but I like to imagine they went on a real one in their early marriage. They could also have went on a ride with nimbus or walked around the beach or went to the movies. Stuff like that.

I imagine that they like to take the kids out, like to theme parks, national parks/regular parks/camping, beaches/lakes, museum/site seeing, or family restaurants ). (Goku mentioned doing this in DBZ kakarot also I based this on all the official son family photos where Goku takes his family places for vacation.) Goku really loves traveling and being a dad. Chichi mentioned she loves when he drives her places and being a mom. That's something they both have in common. They love being parents. 👍✨💕 Also I imagine they will do simple things like go to shopping stores together. Like to get food or clothing, or items they need for the house. Then I imagine they also like spending time together in the house after Goku is done doing farm work and training and after the boy are done with school/work. I had all this already drawn out but I have yet to share it xD

I think she enjoys when he goes super Saiyan in bed. 😌 I know there was this old joke in the Japanese fandom (based on doujins) where Chichi pretends to hate super Saiyan but she secretly loves it. Also there was an old chart that said blonds in anime means romantic so I know the Japanese used to make gags of when Goku is blond he wants to get romantic or "have sx" with Chichi and sometimes she would feel it's the wrong time to be "romantic" so she would kick him out of the house. That was the joke in Japan. But yeah to answer your question, she does love super Saiyan she just pretends to hate him, because blond also means delinquent/punk in Japan and she doesn't want to admit to liking a bad boy 😆

I can imagine kid Goku maybe using it like a hat (kinda like in the movie Lilo and Stitch) or he might use it as a sling shot to hit the bad guys. 😆 Like I can imagine the first time he encounters a bra would be when he goes in the laundry room and then finds Launche's bra and then he starts playing with it (again like Lilo and stitch) and then Krillin would be like "Ahhh Goku do you know what that is?!!" Then he will be like "huh? A hat?" Then Krillin would be like "No you idiot!! It's a bra!! Launch is gonna kill you!!"
Anyway I only say this because I can't see Adult Goku playing with it. Just cause in that one episode with Goku, Chichi, and turtle he sees porn magazines of Roshi (both naked and bra) and he doesn't seemed fazed by it. I think he is aware of what a bra is when he's older especially being around Roshi. 👍