Hello Daisy,
You must remember that in 1912 the standard of living was quite poor to the current standard of living in the UK and USA!
In those days, the richer were generally richer and the poorer were poorer than today. There was no free medical care, welfare and the average life span was only about 50 years. In short, life was harder in 1912 than it is today...
What has this got to do with dinner on the Titanic, I hear you say! Well, the food would be considered rich and good quality by today's standards. In 1912, I would of been a spectacular feast to anyone not wealthy enough to afford it.
The rich people who ate it! Well, I guess they were so used to all that finery, they probably didn't notice anything out of the ordinary...