Using Gravity for Sweepstakes - 5 QUESTIONS

Yes, you can schedule forms to activate/expire on specific dates & times. You can find this under the advanced tab in the form settings.

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Jumping ahead in the list.. yes, you can set a redirect to an existing page in your WordPress install or to any external site. Those settings are also found under the form settings > confirmation tab.

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For the contest rules, you have lots of options, it just depends on your preference. You can use one of the freeform HTML blocks added inline. You would simply include your contest rules in there. You could iframe the content in from another page or site or since the content would most likely be lengthy, you could just wrap it in a div with the overflow set to auto so it would scroll.. something like this.

<div id="contest_rules" style="height:150px; overflow:auto">
<p>Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. Aenean ultricies mi vitae est. Mauris placerat eleifend leo. Quisque sit amet est et sapien ullamcorper pharetra. Vestibulum erat wisi, condimentum sed, commodo vitae, ornare sit amet, wisi.</p>
</div>

Now, on to the age part. There isn't any conditional logic associated with the default date field so without some customizations, you wouldn't be able to limit or disable the form. The datepicker is a standard component of the jQuery UI Library, so there are some settings to set a minimum date. You would have to add those to your theme header file or page template.

http://jqueryui.com/demos/datepicker/#min-max

You could always use a standard drop down field with the age ranges. If they're under 18, use conditional logic and HTML field to display a message, hide the other form fields and then disable the submit button.

We have a contact form built on a similar concept that you can refer to. http://www.rocketgenius.com/contact/

The only way you can prevent duplicate submissions now it to require unique values for certain fields. For example, you can set the email field so it rejects duplicates. If that email has already been used, it will reject it.

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I hope that helps point you in the right direction. If you do need some custom work done, we would be happy to recommend some great developers with lots of Gravity Forms experience.