What do we think about it?.... There's been a lot said about the suction method of draining the oil on this forum. A good search will bring up lots of opinion on this method. Try using words like "mightyvac", "liquivac", or "suction". This method is great for those who are unwilling or unable to crawl under the car to change oil.
I personally prefer gravity drain using the drain plug. It gets more oil out. The last bit is dirtiest.
Congratulations for relearning the joy of taking car of your own car. Take comfort in the fact that you'll probably avoid a lot of problems experienced with these fast oil change places.
You did change the oil filter, didn't you?
95 E320 Cabriolet, 131K