I'm a member at WLAC and quite often use the clubhouse to meet people for lunch.
It's an extremely pleasant place, good lunches, nice place to sit around and chat. The bar is open in the evenings, but not usually with food unless there's some kind of event on. Lunches are fairly standard pub fair - and as such, pretty good.
There is some vague theory about having to be a member to use the facilities - all I can say is that in the 6 months or so I've been a member, nobody has checked my membership credentials except to confirm that I don't need to pay landing fees. I think that you and your dad would find it a very pleasant place to stop, have lunch, sit around, and watch the flying.
WLAC is the only place to eat and drink at WW; it's far from the only business, but every other business is purely aviation (or at-least, not catering related).
G