Title says most of it.
"90-day" plan is a joke to both senior management (who incidentally won't show up for your review, but then recommend your termination because of it) and to the "veteran" employees.
The sad part is there are some serious people at the firm with a lot of great experience---they just don't like to "train" or "lead" or "mentor" or "guide" and would prefer to not see clients at all.
The "culture" is more supportive of being sure to hit the bar at 3pm daily rather than be available for questions, guidance, or assistance.
Be careful as anything you say can ("will") be used against you.