I know nothing of the ticket situation, but there is a trout water near malaga. Its on the road between malaga and Granada and is called Rio Frio.
I did a quick search and came up with these contact details...hope they help
Information an permits from: Alberge de Pescadores de Rio Frio, Riviera de Rio Frio s/n, 18300 Loja, (Granada) Tel: +34 958 323 177
Failing that, there are a few British carp and barbel anglers writing in the mags about fishing the rivers down that way for big fish, and lots of them. The Barbel are a little different to the UK ones and will readily take flies such as peeping caddis or fry imitations.
There is also mullet and bass from the beach
An 8 weight fly rod will do for them.