Yeah vocalign is nice to have if you can afford it, but if you have a singer that can sing in time (with the same rhythm every time) then you dont need it that much. TBH i normally spend 2-4 hours editing all the vocals before i start a mix, and that's WITH vocalign (and usually 10-30 tracks of vocals).
If it's just for quick demo purposes, you can just sing once then use something like Harmony Engine to create a load of harmonies and width. Sounds like a robot, sure, but you get a better idea of what the finished vibe would be. (You can also use multiple tracks of autotune keyed to midi tracks, if you cant get harmony engine, or even just using your DAW's built-in pitch shifter for the free but much more fiddly way.)
I've watched videos of Martin Garrix and Avicii producing, they really just use a lot of presets and samples to get a pro sound in the simplest way possible (some would say that's cheating, but also those "some" probably haven't had any international hits...). Just search on youtube, Garrix shows you his Animals session in depth, for eg. Obviously if youre not making EDM it's not directly applicable but you can recycle some of the concepts at least.
A lot of the big dance producers do have a professional mixer that finalises all their stuff (seen interviews with those guys, though i can recall any names), but their main point is usually that the stems sound 90% great coming straight from the producer, so the mix engineer just adds the final 8% of polish (then mastering adds the final 2%!)
But also, I'd say because dance is more of an "experimental" genre than pop, it's a lot easier to make dance music that sounds good than it is to make pop music that sounds good. Eg, LOADS of house music has very lo-fi vocals, but you almost never hear that in pop. Another example, imagine that nasty (but classic) stabby house piano sound being used as the piano sound on a pop ballad... it'd be awful! Pop typically requires lush sounds to have the 'right' production quality... unless you invent a new style of pop, which might be cool!