Each casino will provide different requirements to be able to have an account with a higher VIP rank.
If the casino you use imposes wagering requirements for what you want good dice conditions or strategy for craps games, this has nothing to do with increasing VIP rank.
If you want to increase your percentage on VIP rank faster then try to bet on sports betting as almost all casinos with wagering requirements for VIP rank will increase your percentage faster when betting on sports than on a game.
But before that please answer what exactly is the intent of this thread, at least provide a bit more clarity and purpose in detail.
He is looking for a "safe" wager strategy to get the remaining 7%, what's so hard to understand?
If you would be familiar with stake forum or stake itself then you would understand.
Most common strategy for people to create high volume wager with limited losses is if your playing "dice" in stake originals, playing 1.01 odds with a win chance of 98%. Of course there is always a "recover strategy" but if you are having a really bad seed this can turn to shit real quick.
Of course house edge is always a factor so basically if you wager 1k you will lose around 10$ for ever 1000$ wagered.
That being said, if you have 93% to platinum 3 this means you still have to wager 35000$, which is actually doable. If you only do sports betting that's 12k in bets, but a risk of losing a lot. If you do the 1.01 wager strat you will have a calculated loss of around 300-400$. Considering the base reward for platinum 3 is 800$ plus recent gameplay bonus plus a 42 day reload I would say this calculated loss is acceptable and worth it.