The only actual "Opening Day" I've been to was in late April, in 1995-- pushed back by the strike.
Attendance is listed as over 32,000 but there were far fewer people there and tickets were available from scalpers for face value or lower, which is how I got in.
https://www.baseball-reference.com/boxes/BOS/BOS199504260.shtml
Aaron Sele and the bullpen shut out Kirby Puckett, Chuck Knoblauch and the Twins 9-0.
Lineup:
Turned out to be a good year. We won the division by 7 games over the Yankees as Tim Wakefield (who officially joined the organization on "Opening Day") was magical for most of the year.
I had tickets for Opening Day 2003, but it was raining pretty hard so we didn't even go into the park, just waited in a bar to see if the game would be played. It was not.
https://dailyfreepress.com/2003/04/14/sox-stymied-by-spring-showers/
The heavy rain that moved through the Boston area Friday afternoon may have postponed this year’s Red Sox home opener, but it failed to dampen the atmosphere at Fenway Park’s pre-game festivities.
The home opener was postponed for the first time since 1996, and eventually rescheduled until August following another bout of bad weather on Saturday. However, Sox fans still turned out in droves to take in the spectacle of Opening Day.
For some reason the Detroit Free Press had a pretty detailed description of the Fenway festivities.
Steady rain and cool temperatures made it feel more like winter than early April, and fans could only laugh when Red Sox commentator Sean McDonough called Opening Day a ‘sure sign of spring’ during the pre-game festivities.
Before the rain arrived, however, Fenway was electric with excitement as fans poured into Kenmore Square. A band played as crowds passed by and Cracker Jacks were handed out to fans already laden with free goods.
Souvenir shops bustled and the smell of sweet sausages filled the air as vendors returned to Lansdowne Street after their winter-long hiatus. Over two hours before game time, the sausage vendors had lines so long it was difficult to determine where the line ended and the crowd began.
I still regret not going into the park to see Ray Charles and Lou Rawls sing. I was sure they wouldn't bother bringing them out there in the pouring rain and wind, since it was obvious the game would be postponed. But they did.
Around 1:30, the pre-game ceremony began. The ceremony included a performance of the national anthem by three-time Grammy winner Lou Rawls and a soulful rendition of ‘America the Beautiful’ by Ray Charles, who sported a Red Sox hat for the occasion and was welcomed by cheers of ‘Yeah, Ray!’
This year’s Opening Day festivities also sported a patriotic flair. Yellow ribbons adorned posts in each section of the park and fans waved American flags. Children with parents currently in the Persian Gulf threw out the ceremonial first pitch with Red Sox greats like Carl Yastrzemski and Jim Rice.
As a steady rain began to fall, however, the initial excitement of the day quickly dampened.
The game, scheduled to start at 2:05, never began and fans that had eagerly anticipated baseball at Fenway were told they would have to wait until Saturday.