It’s a half day tour. We went in the morning, had lunch during the tour (not included in the price) and were back to our hotel at around 1pm.

Because it is a private tour I am sure you can adjust the time but you need to speak to the actual operator

Yes, we arrived in Buenos Aires in the morning on November of 2018. We found a guide online and made pre -arrangements to be picked up at the airport. Our arrival was complicated by many other airlines arriving late which clogged up customs and cost us 2 full hours to get through. I called our guide who was at the airport to pick us up and he waited patiently for us to clear. He took us on a tour for several hours and then dropped us at our hotel with our bags in late afternoon at our check in time. You would need to make arrangements in advance in order to make this work but for us it was great.

I completely agree with the other two responses. To whatever extent necessary, I am confident John will accommodate while insuring you get to see all the important sights. He is a real and knowledgeable gentleman. I am confident you will not be disapointed.

Seems strange the form wouldn't go through. Try emailing direct I found their response very fast

I would go directly to John using his website and ask him.

maybe because those dates are blocked,already booked,as the cruise ships are in port