I like what John Gill says about 1Co 11:34 - And if any man hunger let him eat at home,.... Whereby the apostle shows his dislike of their ante-suppers in the place of public worship, at which they behaved in so indecent a manner, neglecting the poor, and too freely indulging themselves; and therefore if anyone was hungry, and could not wait till the Lord's supper was over, let him eat at home before he come to the place of worship, and satisfy his appetite, that he might with more ease and decency attend the table of the Lord:
I don't necessarily think this refers to abstaining from an acutal meal...but rather the manner in which it is eaten.