Well, I've flown Ryanair a lot. Several STN-SZG return flights, as well as to AHO. CRL, PIK, Treviso (TRS?).
All in all, I'm not disappointed. OK, so I have noticed a few things:
1) all the early-morning flights were punctual
2) all the lunchtime flights were roughly 30 minutes to 1 hour late
3) all the evening flights were at least 1 hour, more often 90 minutes late.
Which completely contradicts their punctuality statistics, so I guess that means I was just unlucky.
I've also noticed that Ryanair has a very very strong "no mercy" culture, entirely procedural and buraeucratic, without flexibility. So, if the terms & conditions say you get left alone in the middle of nowhere if wheather or tech problems cancel the flight, they will do so without a second thought. If your flight is delayed by 4.5 hours and you have booked another Ryanair flight 4 hours after scheduled arrival time, they don't care, and you need to rebook or buy a new ticket. If you want a wheelchair on board, you pay extra. If you need oxygen, you cannot bring your own, but need to buy it off Ryanair (other airlines have the terms and conditions "any oxygen devices must be certified...", not "you are not allowed to bring... but we will gladly sell at GBP 70.00 per bottle"). They won't offer you food or drink even in long delays.
In short, if you read the Terms & Conditions, you know what you are going to get.
Some people hate that, because they want to be treated as individuals, not as numbers in a spreadsheet or sheep in a fleecing farm. Take my experience today, for example. I was booked on Germanwings STN-CGN-STN, flying out at 3:30 pm and returning at 7:50pm. Unfortunately, the outbound flight was delayed by more than 2 hours. So I would have missed the return. The check-in lady sent me to the airline desk, and they called up Germanwings directly. In the end, they offered me to rebook me for free (on a 1 Pound fare, no less!) to any date between now and mid-February, as they had been instructed to do for all delayed passengers today due to the bad weather. Ryanair would not have done that. So while I'm disappointed (could not fly today, and not even Germanwings will refund the damn Stansted Express train), I at least felt that some effort was made to help me out.
In the end, Ryanair is very Wybiwig - what you buy is what you get. That is simply a change in the airline culture, where companies, so far, have a culture of forthcomingness. After all, people do not like being stuck in a foreign country if something goes wrong. So traditionally, the only way for an airline to do that was bankruptcy (we all have seen pictures of stranded tourists sleeping on the floor in airports, for example the bankruptcy of the old Germanwings), or a strike, or a real emergency. And they'd still try and make up for it (flight vouchers, hotel vouchers, free rebooking, ...) unless the cause was bankruptcy. Ryanair is perhaps the first airline in Europe to stick to the contract very very strictly....
Fine by me. I usually read the terms & conditions. (Note to self: Check terms & conditions soon, last time I read through the entire lot was in July!)