I have been in the Louis Tavern lounges a few time and they are comfortable enough but food and drink are basic. I have always entered them via my Diners Club card. It is worth checking if you or your friend have a credit card that has lounge entry as a benefit.
The other question is whether you and your friend need to be together. I dont think either these lounges or Thai are that interesting that they will be enhanced with a shared experience.
Another option is there are massage options that would help pass the time away.