One of the smaller hanabi-taikai events, the Ome Fireworks Festival see about 4,000 fireworks will be set off over the running ground in Nagayama Park. About 15,000 people are expected for this event and there will be 30-40 stalls selling food and drink near the venue. Note that while this event is in Tokyo Metropolis, Ome Station is 110 minutes from Shinjuku Station.
Event details are taken from official sources whenever possible. It is always prudent to check the official event website before attending to make sure that there have not been any changes. If you know of an error in the calendar, then please let me know through the contact form.