imo la~ nothing offensive neither target at anyone~ all dont shoot @ me
if boss admin can dig out past few Rewards event records u can see the people who take part usually the same old people and how many people take part depend on how many "actual" prize not those discount coupon.
I believe at the sponser/merchant point of view you will want more people to take part. As what enenyi mention mirror it at EDMW for more crowds(but also mean you got more work to do).
As for prizes i also agree could spread out and more prizes(you want more ppl to take part you need more actual prize unless the discount coupon really super good)
for example instead of having 1x XPS 13 you can ask the merchant to sponser 10x 1TB hard disk(base on same SRP value) in such way you can have another 9people to take part(stick to your policy of 1 person redeem one but how you prevent clone account from getting is another issue)
Even without top big prize Ohayo! MoneyFace =p wadsad and rest of us will still join but you get a bigger crowd~ with a small pool of prizes but at high prize the amount of people join will be limited since no chance getting any actual prize people wont join(reflected in this event). you can compare the crowd with previous samsung memory card event~ 64gb microsd as top prize yet many join too
Depend how big crowd you want to join if you want 50pax to join you need 45-50prizes
Or you can even give out top 3 prizes from lucky draw(whether will lure more people have to test out) while the smaller prizes at lesser value but with more prizes for redeem purpose. for example 10pts redeem one lucky draw chance.
As for the bonus point, i think you dont need combine together one shot at a fix date/time to give out to all~ give out as and when you like afterall is admin decision to give out