Assume you are traveling in a place, and there may be several tourist attractions. And you'd like to buy a ticket that can be used for several sites and is usually cheaper than if you buy every single ticket for every single site. Do you have a word for that ticket such as an all-mighty ticket or whatever I guess?
It is often called a combination ticket (or 'combo ticket') in many countries.
(About 71,000 results by Google)
You could call it an all-in-one ticket:
combining two or more items or functions in a single unit.
"an all-in-one shampoo/conditioner"
Similarly, you could also call it an all-inclusive ticket:
including everything or everyone.
"the tab for the all-inclusive dinner is $38"
There really isn't a single word that describes these, as it's going to depend more on the city you're in, the tour company you're using, etc. But I think most people would know what you meant with either of the above options, depending on the context you use them in.
Possibilities: 'multi-site pass/ticket', 'universal pass/ticket' and 'all-in ticket'. I think the latter has a nice ring to it.
I would suggest that a word multipass would left you be understood in most non-english-speaking-tourist-attractive places.
I am speaking of an idea that what you need is to say that you are interested in a combined product that is otherwise available as a collection of separate purchases and you are interested in a discount.
Speaking of a ticket that gives more than one access to the same product or service might be different.
For instance when I apply for a visa in order to visit the schengen zone I ask for either a
single time visa or a
multivisa depending on the circumstances.