Hello,
I just came back from my small cruise aboard Costa Pacifica.
I didn't got any other chip than 1 or 5 Euros, the 2,5 were on tables but only during happy hours on Black Jack tables, when the minimum was lowered.

The casino is splitted in 2 areas, one slots only in the walk, the other a bit displaced with the tables. 4 american roulettes (with generic chips) only 1 or 2 open during the night.
Tables were: Blackjack (2), 3 cards poker (1), Caribbean Stud Poker (1), Fun 21 (1). other 4 tables present, but never open. Only one electronic poker table, open only one time for a silly tournament: 9 players, 30 euros buy in, 2000 chips, blinds started 50/100, then 100/200, 200/400, then ante (10 mins each). After the first player out we went all-in in 6 out 8, it was a 30 euro bingo, not poker...
Cage guy was very nice, he was a survivor of Concordia wreck, but he could not sell any directly, and at the tables you couldn't quit without changing in to bigger values. When you win the second 2,5 chip the boy/girl ask you kindly to change in to one 5 or five ones.

I took some picture of 25 Euros, but cannot find it now. I'll try to scan in the next days the Costa card, it was at the same time room key and casino slot card, along with bar and on board shop credit card.
So... everyone asking for chips before, I need to be contacted by e-mail again to know if you want a 1 or 5 Euros chip. I have only 4 each, so I'll try to split them to give at least something to everyone.
I don't collect wet chips, I'll give away all what i got.
Mauro.