Advice on picking restaurants or hotels that adopt sustainable practices - please!?

I still want to go out and have a nice time away but don’t know what is the best way to do this. Are there any standards I should be looking for when I seek out a hotel or a restaurant to use?

I’ve found the following but they don’t really help me?:

https://www.greenhotelier.org/our-themes/community-communication-engagement/sustainability-in-the-kitchen-food-drink/