My wife and I are both almost lvl 12. Over 1k prothean so far and a few hundred anemos.
Only went in there a few times but stayed for a while.
Last week was mostly full party grinding that got us to lvl 5 or so, while this week we joined the choo choo Fate train lol. It's been fun, the massacre of bodies just makes me laugh lol

Opened a few hundred lootboxes...I wasn't as lucky as my wife tho, she got a mount, minions, glamour...all kinds of stuff...i seem to be getting fireworks and lvl5 materia xD

We'll keep doing it, but we're not in any rush. If it gets to the point where there's not enough people to do anything meaningful we'll stop, but as it is right now, it's always been packed for us, people are helpful regardless of lvl, plenty of parties in PF and instances are generally full. Haven't had an issue of finding a party so far.