Altea is def worth a visit, if only to get away from the concrete jungle and to visit the old quaters and visit the church.
The area around the church is a tourist attraction, but it is like chalk and cheese from Benidorm...you might actually believe you are in Spain.
I would go during the daytime for the first visit, then you can walk on the promenade and have a drink, plus drinking in the view all the way to Calpe.
The church should be open during the day, but during the summer evenings around the church local artists display their works.
Altea is a painters paradise with a lovely art gallery there....plus the shops.
IMO: for the sake of a euro bus ride, why go all that way and not have a look at what the Costa Blanca has to offer....you never know, you might actually like the more up market Altea.
I made a video of Altea and the beautiful breathtaking church (Virgin de Consuelo).
Maybe someone will find it for you, I'm just popping in here from Spain.
Sanjiiiiiiii
EDIT: Click here for Sanji's Altea Video .... David HT Mod