Hi Continited,

LH3780 will be conducted by Britsh Midland on an A319 in wetlease for Lufthansa Italia.

Generally, you are allowed to bring 2 pieces of carry-on baggage in Business Class. These may not exceed a maximum size of 55 x 40 x 20 cm and 8 kg per item. The 1-item-rule can be put into action in case the flight is fully booked (as flights to/ from Itlay are rather critical wrt carry-on baggage). However, this doesn't apply for all LH3780-flights next week. These flights still have lot's of vacancies. You should easily stow them aboard.

As for the catering, it's supposed to be on Lufthansa Italia flatware.