I am trying to get a specific element to show when selecting a specific date in a datepicker. I am a novice when it comes to this sadly so any help is greatly appreciated.

I am creating a website that offers sporting bet tips, however i have different levels of members who i want to only be able to access certain content based on the membership they have. I know you can stop certain members viewing pages, however I want everyone to be able to access each page but to only be able to view specific elements. For example, if someone with the cheapest membership views my football betting page, i want some of the elements to be blurred out so they can't see them unless they upgrade to a better package. First of all is this possible and if so how? I am learning all the time but this is confusing me.

I am selling theme park tickets to a number of attractions and am looking to display the total price based on the selections the customer makes, for example, see below, each field will be a dropdown; Choose Year of Travel (2018, 2019) Choose Ticket Type (7 Day Ticket, 14 Day Ticket, 21 Day Ticket) Adult Tickets (1-10) Child Tickets (1-10) Each ticket type will have a different adult and child price for 2018 & 2019 This then needs to be multiplied by how many adult and child tickets are selected. I hope this make sense, if not then let me know and i will do my best to explain it.