Starting this Thursday (the 28th) and running through the 4th, Boston is putting on their yearly Harborfest. Tons of activities and festivities - mostly free. Some highlights include the 18th Annual Children's Day on Friday the 29th from 10am-3pm at City Hall Plaza. There is also a parade at the USS Constitution at 6:45-8:30pm that day. On Saturday, the Tall Ships start arriving in South Boston at 7am. Great viewing of this can be had at Castle Island. Although it comes at a price, the annual Chowderfest is Sunday the 1st from 11am-6pm. Festivities wrap up on July 4th with Fireworks and concert at the Esplanade from 8pm-11pm.
Get the full schedule by CLICKING THIS LINK HERE.
Thinking of attending? Try taking the T instead of driving. Here's the prices for commuting in the Quincy/Weymouth/Hingham/Braintree area:
If you have a Charlie Card, rates are just $1.70 a ride from the red line in Quincy. If you don't have a Charlie Card, just grab a Charlie Ticket for $2 a ride (when you buy at the kiosk, it gives you the option to load $5, $10 or $15 on a ticket - click "Other Amount" and do $4 or $8 depending on how many people you are paying to ride). Kids under 12 ride for free. Parking at Quincy Center is $7. Save $2 and park at Wollaston for just $5. If you are going on the weekend, you might be able to find free street parking in Quincy Center - or a little tip - the Harvard Vanguard Medical Building across from the Quincy Center T-station does not charge on the weekends. So if you can handling walking a block and crossing a street, you can save $7 and park for free in Quincy Center.
If the commuter rail is more your thing, you can park at Weymouth Landing/East Braintree for $4, but since it's Zone 2, you are talking $4.75 a ride.
You can shell out more if you take the ferry - Hingham to Boston is $6 per trip (kids ride free). Parking in Hingham is $3. Quincy too is $6 per ride and parking is $3. PLEASE NOTE: Effective July 1st - rates for the ferries will increase from $6 to $8 per ride.
Those links there will give you more information about the cost and schedule.