After the second chorus, Lovato and her band perform in the rain with the water altering colors in the background. As the last verse approaches, she is back on the tour bus. A single tear rolls down her cheek and the video ends. Lovato performed "Don't Forget" on "The Ellen DeGeneres Show" on April 14, 2009. Also in April 2009, the song was performed as part of the "iTunes Live from London" series. The full performances were released as an iTunes Store-exclusive extended play featuring recorded live versions of the tracks. In May 2009, Lovato performed the song at a Walmart concert, which was later released as part of a live album entitled "" (2009). The release featured recorded live versions of the performers on a CD, and the full performances on a DVD. During the summer of 2008, Lovato performed the song in both of her Warm Up Tour and the Jonas Brothers' Burnin' Up Tour, for the latter she served as the opening act. Later in 2009, the song was performed during her Summer Tour 2009. While reviewing a show in Glendale, Arizona, Ed Masley of "The Arizona Republic" wrote that the song "survived the transformation to an unplugged ballad, making the most of Lovato's most vulnerable vocal performance of the night." In 2010, she performed the song during her South American tour. Lovato also performed the song during her set at the Jonas Brothers Live in Concert World Tour 2010. Scott Mervis of "Pittsburgh Post-Gazette" wrote that Lovato performed a "high-energy, high-volume" version of the song. In September 2011, Lovato performed the song during the revue concert An Evening with Demi Lovato. Lovato also performed an acoustic medley of "Don't Forget" and "Catch Me" at the Vevo Certified SuperFanFest in 2014. The song was well-received from music critics. Ed Masley of "The Arizona Republic" included "Don't Forget" on his "Top 10 from the Disney girls" list at number two, and wrote, "She really sells this epic glam-rock ballad with her choked-up vocals, [...] She wrote it with the Jonas Brothers, one of whom has clearly been enjoying Green Day's latest work. But truthfully, this would have been among the more compelling anthems on '21st Century Breakdown'." Judy Coleman of "The Boston Globe" wrote, "Lovato has already mastered the limited range of skills required of today's pop starlets: the vulnerable-kitten verse, the banshee-shriek chorus, the stiffly sexy whispered asides.