If you travel with Ryanair - do so with your eyes wide open to all the potential additional charges - credit card, priority boarding, travel insurance boxes ticked and difficult to work out how to untick them, baggages charges, etc, etc., etc.
However having said that you can travel with them and arrive on time or at least on time more often than some of the larger carriers.

I travel with Ryanair regularly and am careful not to get caught for more charges than are absolutely necessary.
You have to realise that with Ryanair you are simply paying for a bum on a seat and no more.

ps. Bring your own food and drink to avoid getting ripped off further.