well, that really depends on personal preference.
for me, pure lemonade is too sour so i would add something else to balance it out;
but then i don't drink lemonade often too, weirdly.
yep, lemonade is good for getting rid of the greasy mouthfeel.
i always try to have it with just lemonade, not any flavoured one or calamansi juice.
call me weird but it is how i eat. lol.