The seller could just be trying to give you a sense of urgency....

If you can bring another potential deal with you when you meet then will create the urgency to close on the investor.Bill 

I would think that as long as you maintain the lead on the showing, it would do nothing but potentially build a sense of "urgency" for the buyers.

The level of urgency on their part is much higher when you are standing in front of them and are not leaving until you have a response and a point person to follow up with.

You could have a baloon but writing a note saying if the borrower can't meet the oblligation they get a mulligan takes away from the urgency of the baloon and refinance.But actually you'd be better off reducing the amortization and floating the rate to a current street rate or a half point higher, depends on how the borrower qualifies and ability to pay what ever you agree to.

Not making someone else's sense of urgency my own.

Urgency.

My sense of urgency isn’t the same as there’s, because they have other houses they are investing in.

(I also explain that if they don't call, I won't be there.)When people arrive at the house, I explain to them that there may be others viewing the house at the same time, but to not worry about them and just take their time, look around the house, and then let me know if they have any questions.I then follow-up with them when they're done to see if I can answer any questions for them and to give them an application.I think the group showings are best because it saves my time and creates a sense of urgency on behalf of the people viewing the house because they know there are other interested applicants.The best tip, however, (which is something I actually learned from BP) is the part about requiring them to call one hour beforehand. 

Those who are unsure and need to think it over I usually never hear from again.If they do like it (and you like them), try to create a sense of urgency so they pay an application fee and have some money invested in your property.