As regulated as the marijuana industry is, it can be a challenge to keep a dispensary from turning into a glorified department of motor vehicles. The customer has to walk in with the proper documentation, otherwise they go home. The waiting area is often crowded. The dispensary has to provide goods that are within the parameters of the patients prescription.
I personally like to make online orders that I pick up at the dispensary. However, some places do not allow you to modify the order once you talk to the staff. For example, let's say you complete an online order for a gram of flour and two tinctures. Once you walk into the store, you cannot suddenly decide that you want a vape pen also.
The ease of the process can vary based on the state laws. For example, Florida allows home deliver while Ohio does not. Same thing with online ordering. Even online orders will involve waiting. I've never been able to be in and out of a store in under 10 minutes.
What can I say? The laws are there and we all have to work with them. Like many people, I predict that the laws will ease up over time until you have a legalized model similar to alcohol.