[LAblondeGPhi]

If I missed the part where others addressed the maximizing options advantages, apologies.

To the OP:
-Some campuses Guarantee that if you "maximize your options" (meaning that you attend all of the parties that you are invited to, and list the maximum number of houses on your Bid Card) you will get a bid to a house. This means that if, for some reason, you wouldn't normally be matched to a chapter, you will get hand-placed back into the system.
-It's my understanding that some campuses will place you as a Quota Addition to your first choice if you weren't matched in the normal bid-matching process if you maximize your options. They will not if you ISP.
-I *believe* that if you ISP, and you are not on your first choice chapter's First Bid List, you will not be matched.

Basically, beyond just the "better chances with more options" concept, there are other disadvantages to ISP. Local Panhellenic bodies strongly discourage it, and often create incentives to NOT ISP.

Anyone, feel free to correct if something looks inaccurate.