In tournaments with rebuys and add-ons, it's crucial to play more aggressively during the rebuy period, as losing chips is less costly when you can rebuy. This is an opportunity to take calculated risks to build a large stack early. The add-on period often serves as a reset, so if the add-on offers significant value, it's usually worth taking to boost your chip stack. Adapt your strategy based on your position and stack size relative to opponents after the rebuy period ends, as play tends to tighten up when the option to rebuy is no longer available. Focus on preserving and leveraging a strong stack to apply pressure as the tournament progresses.