BreNayPop said:
And i would not expect a beginner to be in that main group very long...
You probably won't. I NEVER am with the main group - I am and always will be slow, even if I'm totally trained and conditioned. If you hang back, though, you will always always be surrounded by people. The only way to avoid that is to be with the yahoos at the front. The people who are around you not in the front during an MS ride (speaking of the BP here, as the others are not as populated - I've also done DFW and San Antonio) will be those who are riding for the cause (as opposed to serious cyclists) and might be beginner riders. Then there is a pretty constant stream of faster riders passing on your left, (and some idiots passing on the right) at least until lunch each day.
I crashed once in the first 16 miles of an MS ride because the idiot in front of me crossed her tire with the person in front of her and went down. I went down too because I couldn't avoid her - it was too crowded. Since then I've been super cautious of who is around me and will slow down if I think inexperienced riders are immediately in front or beside me.
Anyway, not to scare you but that is why I say some of your riding should be with a group...not to learn how to take turns drafting as with a peloton, but to learn what it is like to be surrounded by other cyclists.
The best way to do that is to plan to travel to a couple of charity rides during the riding 'season'. Those always have people of varying abilities and have lots of different miles to choose from. There is no way to know what it is like until you do that, and no way to do that on your own.