The mean arrival rate is time dependent. There is a different arrival rate for each 2 hour block of the day. These rates are inputed as parameters when the simulation is run.
The percentage of skiers who leave the resort when they reach the base is time dependent. There is a different percentage of skiers departing for each 2 hour block of the day. These percentages are inputed as parameters when the simulation is run.
The probability that a skier will go from one lift or trail to a different lift or trail is encoded in a matrix of probabilities. This is originally a dat file and is read into a 2-d matrix by the Load Data event. By having probabilities of zero to go from certain trails to other trails, the layout of the lifts and runs can be encoded into this data.
If there is a chance that a skier can go from one trail to another trail, then the time that it takes must be included. The time between any two trails or lifts is listed in a dat file and is read into a 2-d matrix by the Load Data event.