Photoshop 7 product photos (easy)

Hi. I have 7 photos of photobooths. I need them to be edited to be perfect product photos. I need to have the background removed and put to transparent so I can change the background whenever I want. Also I need the photos to be postprocessed to look very nice and professional (colours, brightness, alignment, etc.). To sum up I want to have 7 perfect product photos (showing photobooth) with the transparent background. Files saved as PSD. Preview files attached.