nda for digital marketing agency

we already have our launch customers in place but are now turning our attention to our marketing plan for our launch to the market in general. as such, we are meeting with three prospective marketing agencies later this month to show them the product as it is and explain our target market for them to pitch on getting our business. i like the look of these agencies and don’t want to scare them off but i do want to protect our interests. they are the service providers, and it’s their interest to win your business. i can’t see any reason they are not willing to sign it. ideas are worthless without execution and execution is something you can’t really copy.