Pay $40 to get a $400 eGift Card to Restaurant.com from MPIOffers.com.
Go to dine.restaurant.com on a computer or use the Restaurant.com app on your mobile device, then use your gift card to buy restaurant certificates.
Most certificates available are like pay $10 to get a $25 certificate, pay $20 to get a $50 certificate, and so on.
So your $400 in Restaurant.com credit should go a long way.
Be sure to read the restrictions and rules around every certificate.
Many can only be used during off-peak hours (like non-weekends), many require a certain number of people at your table, and almost all cannot be used on beverages & alcohol.
Go to Restaurant.com and browse the available restaurants and rules in your area, since they vary a lot by location.
When using a Restaurant.com certificate, be sure to leave gratuity appropriate of what the food would have cost without the certificate.
For example, if your dinner bill is $27, you apply a $25 Restaurant.com certificate making your dinner $2, an appropriate gratuity amount would be around $5 (18% gratuity on $27 would be $4.86).
Servers know this, so some restaurants may already factory in an 18% gratuity on your bill, so be sure to read the bill before paying and factoring in gratuity.