I've got a great track record.
Saw 3 home games in early February 2010. Wins against Miami and New Jersey and a loss against Orlando. Main thing I wanted to see was the starting 5 of Rondo, Allen, Pierce, Garnett and Perkins which very nearly didn't happen as Pierce injured his foot against Washington before the Miami game. The next day there were reports that it might be broken and I was devastated. Fortunately he recovered to play in the last game I saw against Orlando.
In late January/early February 2013 I saw 8 consecutive games.
Loss @ Detroit.
Loss @ Cleveland (Kyrie took over down the stretch).
Narrow home loss against the Knicks.
Loss @ Atlanta in double OT in a game where the Celtics lead by 26 points at one stage during the first half. Korver went nuts shooting 3s and apparently the 12 point margin was a Celtics record for a double OT loss.
Finally the next game against Miami at home, Ray Allen's first back in Boston, I got to see a win in OT. The win though was very much soured by the news that Rondo had torn his ACL in the Atlanta game. I found out when I was waiting to get back to my seat during the 2nd quarter when an usher just casually leaned over to me and said "Rondo's out for the season". I got my own dose of what happened to Pierce when that reporter broke the news to him in the post game interview.
After that I saw 3 more home wins against the Kings, Magic and Clippers so at least got to finish on a high seeing 4 straight wins after 4 straight losses.
Last year I came over for the first 4 games of the season, including of course the first game in Cleveland. No elaboration needed.
Just once I'd like to travel the nearly 11,000 miles from Adelaide to Boston and not have anything catastrophic happen.