Of course I have. My awesome recruiters don't return emails or phone calls and the only time I really get help is if I show up at their office, which is hard because I work the same hours they do. I know everyone's time line and path will be different but I was looking to get a feel for what might come...mainly so I know what to expect so I can keep the recruiting office on the ball (one they've dropped many times before).
Unfortunately this is more typical than not - my own experience with the officer recruiter was very similar, even 10 years ago. It's a "buyer's market" from the recruiter's perspective, so they don't exactly need to be customer service oriented.
As far as what come's next, a decent source of info can be found over on Military.com in their discussion forums - Navy and then Reserve. The "signal to noise" ratio can be a bit lower than around here, but there are a lot more DCO folks posting and reading.
I'll give you one set of datapoints, but your mileage may vary.
As far as unit selection, the way I've seen it is that they wait until you are done with BRIT (Basic Reserve Intelligence Training), and then you choose. Different RIAs may do it differently.
Drill weekends would begin fairly quickly after you are sworn in; in my case, it was about 3 weeks later. As far as uniforms, you are responsible for getting what you need. A good rule of thumb for someone starting out would be 2 sets of khakis and one of SDBs, but I've been wearing a bag too long to keep track of what's going on with uniforms. (Good news: Thanks to the AF bubbas in my new command, the uniform of the day is the bag - even though there is no connection in the command in any way to flying, flight operations, paper airplanes, or hand-tossed Superballs. Not wearing khakis in a shore J2 job at a COCOM: priceless!) Don't be "the guy" that shows up with a rack of ribbons that he thought "looked cool". Get a set of the Navy Uniform Regulations (presto!
http://buperscd.technology.navy.mil/bup_updt/508/unireg/uregMenu.html) and make sure your rank and insignia are not AFU.
As far as your ATs, that too will vary. Get rid of the "summer" mindset - ATs happen at all times of the year, depending on the needs of the command. Your first AT will be DIRCOM School, now up at Newport. It sounds like infinitely more of a red-ass than it used to be, but just suck it up and get it done. (Summer in Newport would be infinitely preferable to winters...). The next year's AT is NIOBC-RES, which will be a necessary step towards completing your 9600 NOBC (Navy Officer Billet Classification), which essentially "certifies" you as a full-up round-life taker/heartbreaker-deployable booger eater.
As HJ mentioned, different geographic areas may approach things differently, so the best thing to do would be find an Intel DCO who has gone recently before you; the Military.com forum should hook you up in that regard. This place tends to be populated with grizzled old salts who are full of knowledges and can tell you how it was when Pontius was a pilot.... :icon_wink