Photoshop cloning, and montage

I am looking for a skilled photoshop artist to work on an old archive I have. What I would need is the removal of the main subject in the picture. Like if they dissapeared. And the background would have to appear as if they were not there. Which makes it maybe a bit complex on some images. Im attaching the images.

Can you let me know if this is something you can do? And how many hours do you think it will take if you?

I was only able to attach 3 images, they are 6 in total and they vary in level of complexity.
Also, let me know if you have any questions

Paola