1. Recharge when Diamond Event is active.
This event gives you extra diamonds for recharging.
So it is the best time to recharge your diamonds.
2. Always play the Lottery when it is active.
You get your first bet back plus 100 free diamonds.
This is a good way to save up diamonds to become VIP.
3. Buy Diana and Annie pieces from the event Discount Shop.
You can save 500 in diamonds when you buy 100 Diana pieces from the Discount Shop.
Diana cost 1999 diamonds in AMZ shop, 1500 diamonds in the Discount Shop Event.
If anyone has more advice please reply here