No, guides in front and back, hold tour until all gather
Correct. You cannot go alone. There are some caves/caverns you can go without a guide. This is not one of them.
You will be with a guide
No
That previous answer sounds like a great way to get kicked out. They also bookend you with guides. You can't really fall back because there's one behind you.
Yes. Start with the guide and then fall back, backtrack, ...
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