Classic Trial/Vet Account, play through all old xpacs?

I quit WoW in 2011 and only 2-3 times reinstalled when I got an e-mail saying I had a free week. But now with the levelsquish and chromietime i wanted to try something: with the content being scaled to my level - is it possible to quest through all xpacs with a trial/vet account only? Or will there be a block somewhere in the progress? via /r/wow https://ift.tt/3eeB1EI