getting started with drupal is not easy even for experienced CMS users. acquia makes the jump into drupal easier.
installation is easy, you download the stack that fits your needs, with or without extra modules, and few clicks later you have a running drupal environment on your server.
the support and webminars are helpful, coming from experts who are contributing to the drupal community.
i was working with vanilla drupal since drupal 5 and only found about acquia wwhen drupal 7 was released, and i am glad i did.
you also get a nice theme and some admin modules that help a lot with admin and maintenance.
you get a free trial, so, give it a go, if you are a beginner drupalist, you would love it.
i am usually a do it yourself developer, so installing the all in one stack felt unnatural; )
few things that are cons would be pricing, mainly for smaller projects, you can find a basic hosting service and transfer the drupal installation yourself for a cheaper cost.
another issue can be not having the latest drupal available as soon as the drupal community releases it.
ease of setup.
admin automation or simplification
support, getting support via drupal forums can take some time, acquia experts are a much better way to get support