Just a quick note that I updated our web page on Public Transport to Benidorm and Denia from Alicante Airport here. With the biggest change that Alsa (spanish bus company) now runs 13 daily bus shuttle connections from Alicante Airport to Benidorm. Compared to the eight daily routes they had last summer, it is definitely an improvement.
However this is only for the summer schedule, which usually lasts until August. During winter time they will typically reduce the connections to around four or six. I will keep you posted here.
With the recent expansion of Alicante’s Streetcar system, you can also find an updated detailed picture of the streetcar or Tram route map here.