You can visit the casino in Baden-Baden without formal clothing! I’ve been there myself, and while the traditional casino area does have a dress code, the slot machine area is way more relaxed. You don’t need to suit up or anything fancy to enjoy the slots – casual attire is perfectly fine.
When I went, I just wore jeans and a nice shirt, and it was all good. The atmosphere is still classy, but they're not strict about the dress code in the slot machine section. It's a great way to experience the casino vibes without stressing about formalwear.
If you're curious about other people's experiences or need more detailed info, you might want to check out this site I found, https://themulligans.org . They’ve got some great insights and tips about visiting casinos in different places.