Daily First deposit is only allow to claim once a day with first deposit. Unlimited deposit bonus is allow to claim from all deposit. More detail and T&C, Please refer to promotion page.
Example: If you make two deposit with RM 2000 and RM 5000 in a single days, you get RM 200 & RM 250 Bonus. Vise Versa, if you make RM 5000 in the first deposit then RM 2000 in the second deposit, you bonus would be RM 500 and RM 100. First deposit is 10% and Second deposit onward will be 5%.
Yes, sometime W138.com have attractive promotion of referral spouse to join as well.