Although its more expensive because the guests arent contributing, you can buy vodka, beer, juice, and cocktail in bulk to save
Proprietary topdressing There are lots of topdressing products on the market
You can opt for the thin straps showing off all the shoulders and dont worry all options include a shelf bra you can use a nice supportive fabric for and even add cups into for a glorious bra-less option
Opting for a tailored jacket and dress pants, such as those offered by Sartoro, can strike the right balance between formal and relaxed aesthetics without sacrificing style or comfort
If it's the right time, your guide might be able to arrange a viewing of one of these ceremonies (be warned, however, that animal sacrifices are typically involved)