Group Tours help please

I’ve never gone on a group tour (everything planned, with a dedicated guide) before and I am interested in learning more about them.

If you have gone on a group tour, what are the top things you have liked, and what makes you choose a group tour over other travel? Is there anything particular you look for when choosing a company to go with (group size, experiences, company values, etc)? Is there anything you did not like?

I’m looking into Europe, mostly, with the possibility of Argentina.

Thank you for your help!

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