I recently read a review of another photo booth company that the client asked for a pink background and instead got purple. This can be pretty disappointing and by the time your event has started it's too late and you accept that you aren't getting what you want. There is a bid difference in color and if your entire party is planned around a color it's important that the backdrop is what you want and asked for. My point is that you may see reviews that are all high rating but one or two low ratings you should read those as those will provide a lot of insight and may actually change your mind on using that particular company.
Most photo booth companies don't have a store front so all your communication is done over the phone, email and text messages. We often meet clients at a nearby Starbucks. This allows us to meet face to face discuss their overall concerns and look at backdrops. I am happy to bring backdrops to look at and let them pick out what they want. We have an abundance of velvet backdrops, sequins and satin backdrops in an array of colors.
Each photo booth company is likely to have a go to backdrop they use. Something that is versatile and matches any template design. You are likely to see that in their past events the most common backdrop they use. If you don't like that backdrop or think that it's not high end you may want to rethink that vendor because this is likely the backdrop you will get.
The combination of a creative template, beautiful backdrop and great lighting your photos will look amazing. We often here at events wow this backdrop is beautiful before we are even ready to start people are taking selfies in front of our backdrop. The next comment is wow I look flawless under this lighting I wish I had this lighting at home.