What is your rank? I'm now going platinum where the exclusive bonus is getting daily reloads. Weekly as well as monthly bonuses are currently in good stake in the program.Weekly Boat. Monthly. And Reload / Day
As far as I know, the difference between the timeframes is pretty significant in terms of overall reward, though obviously it's significantly more work.
According to their VIP section, you have the following format for the reload:
Reloads can be claimed either daily, every hour (1/10 daily amount) or every 10 minutes (1/40 daily amount). Choose what suits you best & in the currency of your choice!
I haven't checked but that implies that you could probably change it to the timeframe you're comfortable with. One problem with the longer duration between reloads is that it reduces your overall rewards: for daily reloads, you effectively always lose out on the 7th day; for hourly reloads, you lose out on the 168th hour; for 10-minute reloads, you lose out on the 1008th claim. These are all assuming maximum claim, of course. I don't think many people are trying to game the VIP system for rewards, considering the expected loss it takes to attain a substantial rank.