1. Is the practioner supposed to abstain from "bad" things in the evening after breaking the fast or is it just during the day? What's the hardline, "accepted", and commonly practices answer to this? 2. Is the big dinner party thing on the last day of fasting or the subsequent day? 3. Do people get gifts, when?
2- Big dinners are everyday at sunset. Some people/cultures have several meals before dawn, some other prefer to have just one or two.
3- Nobody get gifts. Usually, it's kids who get new clothes during Eid and they also get money gifted to them (usually small change and can range between $1 and $20 depending where you are). During Eid its required to visit family and friend in their home.
2. Dinner party is a cultural thing, because we didn’t eat during the day and we have the same time to break fast, it became a party because everyone do it at the same time and usually at the same place. But the day of breaking fast (the Eid Iftar), you are supposed to eat in the morning to declare that Ramadan has ended and you can continue eat at day.
3. Another cultural things. Here, it happens few days before the end of Ramadan. The government mandates company to pay bonus during religious celebrations (christmas for christians, eid iftar for moslem, chinese new year for chinese, etc).
In my personal experience as a compulsive snacker being able to fast daily for a month makes me feel like I can do anything