Your waiter has to stop serving the folks (at all their tables) that bothered to come on time and take your orders. Then he (she) has to run to get your order while still trying not to make everyone else (the ones that bothered to come on time) wait for their orders. Be an adult and go at scheduled time next time
What's the difference where you get your drink? Off 9 night recently and voucher was always used without asking. Goes for specialty, main dining and everywhere else.
The voucher is seen on computer screen and it's the first payment method they use