Hi Rob,
Alamo is a normal lake in AZ, and part of the State Lake system. The pass for the day to enter the park includes lake access, google Alamo Lake AZ, and web page will pull right up. Think day use is in the $5-$8 dollar range. They have many camping, RV sites, small store open 8am-5pm. Fishing requires standard AZ fishing license and all info for that can be found at AZ Game and Fish web page.