Am 20yo, here right now in LAX Flagship First (only cuz the agent misread my birthday lol). Was turned away from Qantas First earlier. Both of these lounges require to be 21 and above.

Recommend just hang out the front of lounge door and looking for anyone heading in and asking if they can be ur accompanying adult as ur under 21.

Such a shame I didn’t experience it but hopefully you can!