Pros: Their clout in certain areas of the world is necessary to worry-free travel.
Cons: You may meet a bad apple, but that's possible in any group.
Don't travel alone! Las Americas arranges every detail. If headed to India, wait until you can have DAVID as your tourguide. As we traveled near and mid-east, we had individual tour guides for Egypt, Israel and Jordan. The luxury of having a guide all to yourself is unparalleled. Yet, there are palms to be greased, customs to know, etc. David even made sure my 121 rolls of film did not have to go thru x-ray machines on every air hop! Wow!
Our Egyptian guide deliberately misled us to an unscrupulous jeweler. When we arrived home and our jeweler of many years told us the sad truth, stepped up, contacted the Egyptian company and got our refund! Can you top that. I could go on, but I think I've made my point. We strongly, heartily recommend this company.