Thing is, you'll have to fight the lounge dragons to enter 2F lounge, especially during peak hours. If you are anything but FB Plat or Ulti, I'd say your chance of getting in the lounge are quite slim given how crowded it is these days.

Honestly the 2G lounge isn't so bad now. If you don't plan to stay for more than 2-3 hours, I wouldn't try to sneak my way into a different lounge.

As ​​​macaron95 said below, F&B is just a tiny bit less extensive than in 2F. BUT lately, 2F has been so crowded that empty stands and platters are getting more and more common. Good luck finding the main hot meal after 12:30 or 20:00. Never had such problems in 2G.