might have very manageable cravings for a good week or two,cigs have more addictive chemicals added to them at the plants its not just the Nic that is addictive in them,big tobacco dose not want people quitting so whenever they have an excuse they add more addictive crap to them, like the new stuff they spray them with to make them extinguish themselves when they are not being puffed,they could have used something non addictive but of coarse they picked something more addictive then the Nic to use.
also cigs have MAOI's you wont be getting any of that in your vaping so you might have troubles sleeping and have slight elevated stress for a few days/weeks,tho most people have no problems when switching.
a big factor for most is if they ordered a decent device and didnt just buy the cheapest thing they could find,,with vaping you get what you pay for,i started with a kit from BLU it was very frustrating,woth a new battery and carto on it it would only last me about 10 minutes of moderate vapor production they would turn to total junk so i would have to keep switching batterys and carts and cleaning it every few hours...kind of frustrating at an already frustrating time. finally i ended up getting a ego kit that worked much better and i was able to quit cigs no problem with that. these days i have several higher end devices but still find myself using my ego's from time to time
but a few good things you can expect if you stick with it are, better breath,clean smelling clothing and car,you will start to get your sense of smell and taste back in a few months and will be surprised at how good things taste and smell after quitting,i really had no idea how much cigs effected taste and smell til i quit.and the most obvious benefit is your breathing,,with in 6 months you will feel like a new person,probably wont get labored breathing going up stairs etc,and you will also start to have a lot more energy its amazing how much cigs beat your body down and how great you will feel once you stop!