Malta Discount cards/Coupon Clubs

Hey, I am coming for holiday in Malta in August. I found some different discount clubs/cards such as:

https://www.couponclub.mt/en/home.htm?city=null&category=&coupon_type=&sort_by=&page=1

https://dealtoday.com.mt/?gad_source=1&gad_campaignid=663860371&gbraid=0AAAAADn_JLAg9hZS_Qa4V5yJ6Lkf0CjBD&gclid=Cj0KCQjwkILEBhDeARIsAL–pjwJusWTpNhRRRPfrc8ycZAbCRIZa9qGtnyca3aiy0Lyhbh_rSY40fUaAkguEALw_wcB

https://maltadiscountcard.com/?gad_source=1&gad_campaignid=20807197642&gbraid=0AAAAADqLUrzL6UB-mCjzOnn-Aqji3k-QX&gclid=Cj0KCQjwkILEBhDeARIsAL–pjx3xhqFBBN-O-UKEK3l3MRlhdIIsrQKBD5ZzpjkwREeRxK0m3rR7YkaAglwEALw_wcB

I was wondering if anyone used them to see wether they work, are worth it and so on.