Part of the answer is procrastination because of doubts about how well it would work. I bought it not knowing if it would really fit into the table. If it did not fit into the table, then would I have to build a stand for it? My not knowing stopped me from even beginning the process of opening the box. That is a poor excuse because I should have been more like the children who would have torn open the box immediately as if it were a present.
Let's fast forward to this spring when I actually did open the box to put the pump together. When I started to assemble the pump, I found there was a piece missing. (Assembly, by the way, is simple and the website has a good video on how to put it together.) The piece that was missing was a custom made washer that was critical for assembly. What to do? I asked my support person to call the company to see if we could get the part. She did and she admitted that I had waited a year to open the box. No problem, they sent me a new washer no questions asked. Thank you Kodo Kids.
I put the pump together at home without knowing if it would fit into the table. When I got it to school and placed it in the table, I was pleasantly surprised: it fit perfectly inside the table and I could secure the handles of the tub with duct tape to keep it from moving. All my fretting was for naught.