The website says the $25 birthday reward is for during your birthday month. I read that as you get $25 to use that month but if you don't it's gone. I don't think you can keep adding up bdays on the gard for awhile to get a free dinner. "Birthday Reward: members will earn a $25 reward on the first day of their birthday month that can be redeemed anytime during their birthday month. Birthday rewards are not eligible for deferral and will automatically be applied on members first visit to the restaurant during members birthday month. Birthday rewards expire on the last day of the members birthday month and will not be extended."
Right there, you can't let it sit there for later. Keep all this in mind to see if it's worth it.
We visit Rainforest Cafe once a year so I will just stick with my safari club and my free my points gift cards I think.
If you read the fine print it lists all restaurants except the ones in the golden nugget in las vegas.
http://www.landrysselect.com/termsConditions.aspx
If I lived closer to one and didn't just make it a part of our florida trips maybe it would be worth it to me but they don't count anything you buy in the shops and they don't count free stuff and I usually have some free kids meal coupons (I got them on ebay) so there goes hafl my point earnings.