Hi Mary,
No there is a rough track that takes you on a coastal path around the plantation. Done it many a time in my sandles so only dusty feet if you are happy to do if not good trainers are fine. It joins the new walk at the desalination building at Fonsalia into San Jaun.
Just follow the coast from Alcala beach by the bars up the hill on the right and keep right at the top. You will come to a dead end road. Just keep going.
Awol