Great news for Cardiff, have been using them from Luton for years and not really got any major complaints, just make sure you stick by rules for hand baggage and checking in online and you will be fine!
It is very unusual for Wizz Air to open up a base from an airport they have never previously operated from, as usually they fly there from other bases first. It is also interesting how the airline has suddenly in the last 1-2 years started expanding operations from the UK to summer sun destinations in Greece and Spain, as previously they avoided these routes like the plague and would only fly to Spain and Greece from their central European bases, where there was less competition.
Below is what the summer schedule looks likes for Mid-Summer in June/July/August (showing the departure time and arrival time back at CWL), and looks like that will be one busy Airbus A321 shuttling between all these destinations and Cardiff! Lanzarote and Sharm El Sheikh are not showing as they are only bookable for late 2021 going into the winter.
Sharm El Sheikh is also an interesting destination, as Wizz Air do not operate there from any other airports on their network, and I think it might actually be the longest route on their network and block time of six hours!
Mon
Heraklion
06.10 <--> 15.25
Tenerife
16.35 <--> 01.55
Tues
Corfu
06.10 <--> 13.40
Larnaca
14.30<-->01.10
Weds
Heraklion
06.10 <--> 15.25
Tenerife
16.35 <--> 01.55
Thurs
Palma
06.10 <--> 11.25
Alicante
12.15 <--> 17.45
Faro
18.30 <--> 00.30
Fri
Heraklion
06.10 <--> 15.25
Tenerife
16.35 <--> 01.55
Sat
Corfu
06.10 <--> 13.40
Larnaca
14.30<-->01.10
Sun
Palma
06.10 <--> 11.25
Alicante
12.15 <--> 17.45
Faro
18.30 <--> 00.30