The travel cases are expected to be thick for the purpose of protecting the booth, especially the mirrors, acrylics, and any other vulnerable parts of the booth. Lighter cases would not provide the substance to safeguard your booth compared to the heavier and thicker case can provide.
As our old customers share, technically, it's only heavy loading and unloading since the cases have wheels for the ground part. It's all protection and taking good care of your investment.