We do suggest that you buy them “just in case” . But if using it for your tents or not ,That all depends ,if it doesn’t rain,sidewalls will increase the temperature under the tent by 10-15 degrees . Sidewalls are good if it is cold out ,Remember the benefits of sidewalls…..Proection from rain and wind , for privacy (maybe a disliked nosy neighbor) or if you want to block out an unattractive view close to where your tent is set up etc. If you choose to buy the sidewalls, remember to specify in advance if you want sidewalls and what kind of sidewalls so that we can offer the most accurate prices . Pls no worry about how to put up and take down the walls ,we have instructions and photos and Online install video to teach you .