All of the amenities on a master plan are likely to be finished as people move into the area. If we take Town Square as an example, their central park, which is an amazing facility to have in any community, was delivered after people moved into the community. You need to be mindful that if parks, pools, running tracks etc are planned, it may take some time for the final facilities to be delivered. Some developers can work on these alongside. Maple in Dubai Hills for example had their community pools delivered on hand over, a nice touch if you are moving somewhere new. It comes down to researching the developer and looking at their previous projects. Review the delivery of these amenities post handover, redflags will be if communities are still waiting for water in the pools months or years later.