“DELISH” offer is valid for eligible stays. You earn one certificate good for up to $150 food and non alcoholic beverage credit to be redeemed on another stay (until 1/31/10) at one of Hyatt's participating resort properties in the U.S. and Caribbean.

A stay is defined as one visit of consecutive nights regardless how often you check in & out.

If you like to redeem your certificate you have to convince the property

1. to check you out after your first nights & hand you over your certificate.
2. to accept your certificate on an ineligible stay.

IMO a much easer approach to fulfil your goal is to participate in DEL5K offer. $150 food and non-alcoholic beverage credit are good for that current stay and you will earn one time 5K bonus GP points (regardless of the number of stays).