"...tinidazole (4 x500mg) for giardiasis/diarrhoea and a weeks worth of 500mg BD Ciprofloxacin for any other systemic illnesses or wound infections."
Agree with the tinidazole, but I generally avoid Cipro during athletic events because of the incidence of tendon rupture...supposed to be more of a problem for pediatric patients, but we have seen several now in adults. Bactrim (trimethoprim/sulfa) is a good choice, would cover respiratory as well as wound infections. Or Keflex, but qid dosing is a problem on the trail.