Did they finish with they construction working by the lake? Last year the volleyball net there was not accesible because of it..

Yes

Yes, it is finished.

Yes, they did. There is a new weir (finished a couple of years ago) and a new bridge (finished this year) The old wooden bridge is still there. What you called the lake is Zipprer Canal. It separates the main part of the park and Buster Island. The canal goes West to Lake Rosilie and East to Lake Kissimmee (Florida's 3rd largest lake).