Organizing any type of promotional campaign is difficult and promoting some products or services can be tricky. The big problem is normally that the choice of what is offered is incorrect. You want to be sure that you actually want to use promotional drink bottles in the campaign. This is something that aspiring marketers normally do not understand. The simple fact that you think something will work or if something worked in the past does not mean that this will also be the case in the future.
Have patience and always take a look at the market that you try to conquer. If you see that your analysis highlights the fact that promotional drink bottles were effective in the niche in the past, there is a possibility that this will be the case in the future. However, this does not actually mean that you will always be successful.
You basically want to learn all that you can about the market, what you want to promote, what works and what does not work. Also, you want to first test the campaign to see if it will really be successful. If not, just focus on other options that are available on the market for you.