Please, please don't compare it to Discotheque. I can understand sonic comparisons, but when you're dealing with a rock band that plays guitars and likes to frequent them, that could also be a moot point.
To me Get on Your Boots is the antithesis of Discotheque. The former is a pop melody bridged to a rocking number with some interesting transitions in the guitar work, but the former is a truly depth work of structure and guitar work. I've always said this, but Discotheque is a producer's wet dream.
To explain Discotheque, it's U2's attempt to make a dance song out of a guitar driven four piece band (Bono's vocals being very important). Now some people understand dance songs as repititions of a few number of beats, but better dance music is the layering of beats with constantly moving structural changes. Discotheque not only has the longer length to fit the dance number mode, but it has dramatic tonal changes as well while still featuring many of the same instruments and effects. A normal pop song is the effect of a good chorus over some singing and instruments to bridge them, but Discotheque adds numerous varieties of how to display that chorus. The band is even successful to extend the chorus in interesting and different ways. The fact that the song feels neverending and could go on with the variety of ways in which the simple lyrics are sung enshrines it more to the dance hallmarks.
The more I think about Get on Your Boots, the more I'm reminded of live jazz recorded in an album. U2 played with a lot of familar things in the song, but did so with a little more freedom structurally and made it to some loose ends. The fact that Bono's yell at the 2:30 moment is the biggest highlight shows loose with structure the song really is. No structured chorus dominates the song and there is no series of memorable lyrics which the song goes back to. The title of the song, "Get on Your Boots" is repeated, but in background solitude.
Jazz that is meant to feel like it was recorded live also feels the same way. The production isn't as complex because the music is meant to feel off the cusp. The lyrics in Boots certainly feels that way, too. So I can't see how anyone can see how the detailed structure of Discotheque resembles the quircky Get on Your Boots at all.