There's a lot to do there on Broken Shore either WoTLK Gold alone or with a handful of other people there to keep you traveling. There are spots like the Sentinax feature that's a form of cool attack by a command vessel at a specific POI that moves around. It's possible to enter without any grouping if prefer to participate in that alongside other players.

You can do the World Quests by yourself as long as you'd like, but there are going to be other players around. The Legion attacks that will take players to other areas of Broken Isles are also largely single-player until the end when you encounter a typical three-person challenge that you could wait for on your own when you'd like. While you're at it, you'll continue to progress reputations after you hit exalted. The threshold seal will get another patch. Thus, you'll be able to continue your Emissary quests as well as continue receiving rewards for the reputation you earned. In the event of an attack those World Quests do are considered part of the Emissary. Although it alters what World Quests are available while that Zone's being assaulted, you're still working towards progress.

That's why there's lots of possibilities as a player that desires to be in for half an hour this is usually one of my activities. I'll play for about 30 minutes or more, for an hour or so at one time, and be likely to have cheap WoTLK Classic Gold lots of fun and accomplish lots of progress.