It is a bit of a generic thing, but are there any tips or tricks when it comes to getting your parcels(on time)? This might be a bit of a no brainer for some, but the way I see it is that for those of us(esp. OzB'rs) who frequently order things online need to be careful about some of the companies who handle our valuable goods just like any savvy consumer.
An anecdotal story:
A few weeks ago I placed my first ever Amazon order and chose for it to be sent to a nearby Night Owl Parcel Point which was supposed to be quicker than alternative options. This left much to be desired after having used Australia Post / Star Track. I know a lot of users have had poor reviews of Australia Post but I guess this would have to be judged on a case by case basis since I can only think of 2 times where I have not received parcels(discounting recent experience with Amazon).
In any case, feel free to discuss what habits and choices you make with certain vendors and logistics companies to increase your chances of DIFOT, since no one wants a late parcel.