Solved! Go to Solution.
Well, what I ended up doing is creating a raster file of the information held in that attribute table and then, using the Zonal Statistics as Table tool, I was able to get an output table with this (field area in acres) information.
If anyone knows a more direct way of listing field information from an attribute table using Model Builder, please let me know.
When I try the Add Join tool, for some reason it deactivates the other Zonal Statistics as Table tools that are attached to the Shapefile.
The table to which the "Field_Acre" attribute field is to be joined will not join as the input and so therefore, the Selection Feature set shapefile must be the input. In doing so however, the other zonal tools lose the info. required to run.
I used the <Make Feature Layer> tool to get my feature class to a layer file for input into the <Add Join> tool. An extra step which seem ridiculous. If anyone knows a better workflow I would love to hear. The <Make Feature Layer> did work for me.