The advert specified "2 years waiter/waitress experience minimum". This led to an interesting discussion over lunch about what you'd have learned during those 2 years of experience.
As I am a bit of a process freak, I quickly summarised it into the following:
Greet and seat customers
Hand menu to customer, say you'll come and take their order in a couple of minutes
Return, ask customers if they're ready to order
Write down order on pad, take note of table number
Take order to kitchen
When food/drinks are ready, compare items with order, then take items to table if correct
Return after a couple of minutes, ask customers if everything is OK
When customers have finished, ask if they'd like anything else
Clear table, take used pots to the kitchen
Reset table for next customers
Repeat until closing time
I reckon that you could hone it further, but that's just my initial take on the concept.
The rest of the learning has got to be more complicated than that, I'm sure, but I don't think that it's particularly difficult to make tea and coffee and put buns onto plates. God only knows what people are like at home if they can't manage that sort of thing.
Anyhow, I'll give you 5 minutes to memorise the routine and then you can say that you're fully trained. Don't forget to smile and be friendly as though you want to work there...