First off, hire several janitors to deal with the phenomenal amounts of litter that are all over the park. It is recommended that you assign them all a specific patrol area as well. The quickest way to deal with cleaning the park for the Apprentice objectives is to hire three janitors and plant them right at the entrance of the park. Letting them randomly sweep will quickly clear out the entrance area of the park before Cami O. arrives to complain about what a stye it is. Your park has no amenities other than the monorail and the western-themed restaurants to start, so your first order of business after the janitors should be planting bathrooms, benches, and info booths to keep the folks happy.