From the club, you’d have to buy a hospitality package that included a meal in one of the restaurants. They don’t sell just a seat with lounge access on a game by game basis.
Your best bet for just three seats (no hospitality) is to look on the exchange for sold out games. The cheaper seats are...
Couple of things:
3 levels of general membership: Gold, Platinum, Platinum+.
The difference between Gold and Platinum are: size/quality of lounge + centrality of seats (plus a tweak to parking rights). Platinum to Platinum+ is just centrality of seats (plus again a tweak to parking rights)...
Extra Loyalty Points. We used to get 50 (-ish?) more, just for being a member. Got taken away (I'm going to say) 5-6 seasons ago - quite correctly, of course
Ah well - since others are chipping in, here's my tuppence worth...
It a very different experience from what was sold and even what it was a few seasons ago - many lounges are smaller (space given over to restaurants/Director's guests overspill area etc); at least one lounge has disappeared...
The knobber who gave you the tickets should have pre-warned you about the tea-getting procedure. I'd have a pop at him if I were you.
Your second para is bang on.