Your strategy is to maximise festival awareness and word$-$of$-$mouth by optimising the screenings based on the above objective function. Ensure that only whole film slots are allocated, and each film must be screened at least once per the agreement with the production houses. Use the GRG Nonlinear optimisation method within Solver, setting the precision for the routine to $0\mathrm{.}000001.$ As always, consider initiating the solver routine from different starting values to ensure solution consistency.