For those who've never attended Microsoft events or are wondering, the term "solution providers" (mentioned in the first e-mail message I received) is generally fairly broad, and - in this case, at least - likely refers to many, many groups, and not just hardware distributors or resellers.
While I cannot speak for other cities, the varying levels of IT attendees at the events in the greater NYC area generally run gamut - from resellers, systems builders, and the like to developers, system administrators, Gold Certified Partners, ISVs, OEMs, and Business Solutions members. Personally, I rather enjoy interacting with the many different groups during the break sessions as it can be rather interesting to meet the different facets and functions of the IT world, including more personal interaction with Microsoft staff members. Of course, it can certainly foster partnerships that aid in a business sense as well.
Are there occasionally a few attendees who are obviously completely out of place, or present simply for a few tangible incentives? Of course. Referring to the above referenced area of the country however, I think it would be safe to say that group is a fairly insignificant minority (less than 5 - 10 %) of the whole.
Would be remiss not to point out that there may be a complete different experience in other parts of the country, though.
If it helps at all and can serve as any indication, both e-mail messages have been delivered to my Microsoft Partner e-mail address.