Volume of shares trading as in "liquidity" When there's inelasticity the commodity price does not change in response to demand. What you can generally infer from the combination of the data represented both graphs is that the share price of DIS increasing over time with a stable level of trading. August 24 there was a high volume of trading as the stock market dropped 1,000 points on oil price dropping as a result of China's valuation crash, institutional holders moved lots of shares around. So as the markets calmed, volumes again dropped to historical norms and share price began to rise again.
DIS contains lots of other stuff besides the parks. A better parks indicator would be unique admissions +/- in the same weeks of sequential years vs ticket price and mix (single day, multi-day, hopper, AP), that would give you a per person gate revenue average. Then you'd need to add in a per cap comparison of food/beverage/merchandise to get your average revenue per person and then subtract your costs to determine (if any) profit margin.