Paul yes it was Mick I have done the Alhama - Alicante several times and the tram to Benidorm but not the Bus Alicante - Airport
I forgot to say when you travel to Alicante there is a 10 min + or - wait when changing trains.
Alicante to Alhama there is approx 30 min wait (time for a beer or coffeee in station cafe)
Alos forgot to say the trains are very punctual.
The train to Alicante is slower than driving but cheap and less stressful. Takes about 1.5 hrs going 2 coming back.
Alicante Terninus is quite large (Half size London Waterloo) and also has a Information shop where you can get help in English and maps of the city etc.
Right outside the Terminus across the road is a big shopping centre which includes En Corte Ingles Dept store