You need to establish where the action is taking place within the first 10 pages otherwise your reader will struggle to connect with the storyline.
This doesn’t mean going on and on about location, location, location. It doesn’t even need to be more than one sentence but it does need clarity.
[blockquote]Where is your story set? It could be London, New York, outer space, down a rabbit hole or in the future. Wherever it is, let the reader know sooner rather than later.[/blockquote]
Your reader needs to know where they are. Lose the reader in the first 10 pages, lose them forever.