I use it on average twice per month for the last 20 years. At the start it was just a handful of flights per day, very quiet, and hardly any passengers. Then came the expansion of numbers and building work. It would be fair to say they had their problems along the way. Not least security search area queues - about which I have complained to the airport directly in the past.
They've relocated and expanded the security search area which is now excellent. Apart from the morning peak I don't think anyone would wait more than a few minutes nowadays.
If you have a look on the airport website a number of retailers have offers - particularly catering