I have been vegetarian since I was 10-ish-25 years... started eating fish again in the last 4-5 years (although not entirely happy about it so always make sure it is sustainable fish which is line caught). I find it fine. I have never craved red or white meat, although could barely tell you what they taste like, it's been so long. I wouldn't worry. I eat fish, nuts, dairy (I was also vegan for about 5 yrs until 4-5yrs ago but due to early stage osteoporosis likely caused by teenage anorexia I (again reluctantly) started eating dairy again). I'm still here, fitter than most and manage fine. To this day I never crave red meat, or chicken/turkey
Yep, and so fitness wise you should be fine. It will just be a case of getting into the OW as early as possible to get as much practice as possible. It can be a shock to the system. It's cold, you can't see anything/very little, there are no lines to follow, have to sight and there are waves and currents (even in fresh water)...and the wind can be a factor. You also don't have the benefit of kicking off the wall every 25m/50m. Oh and you are swimming in proximity of others and can come into contact with people at times, especially at the start when you can be unfortunate enough to be kicked. It's all about practice. Maintain your fitness now, maybe do some smaller events first and get into the OW asap. The bike... well, that's another story.... Good luck, keep us posted...
Hmmm... easier?? That depends. Wetsuits make you more buoyant/streamline yes but I would not recommend swimming a HIM breaststroke, neither would I recommend swimming any distance breaststroke in a wetsuit, it will kill your back. It's also generally much easier to swim FC for that distance as you'll be quicker. That said you have sighting and swimming in the right direction/zig zagging to contend with as well as waves, currents etc.
We do have a weekly hill reps session with our club... but then we are a hill running club. Running regular hill sessions gets your body used to them.
We incorporate reps which includes straightforward sessions with multiple reps on a few different hills - shorter, longer, steeper;
Circuits, which involves running loops of different lengths which includes ups and downs - teaching you not to relax at the top and keep on pushing over the top and down;
Fartleks which are usually not that hilly but just incorporate using different speeds...
Off road sessions which are obviously good as we are an off road club..
Relays.. which are fun but also relevant esp to xc season...
Downhill sessions - these are off road and help teach you to relax your upper body while still pushing on downhill (your knees will hurt if you are holding/leaning back going downhill as the pressure is going down through your knees).
We also do continuous sessions where we run up a series of continuous hills...
All of these sessions help with hill races throughout the year but also with road racing in a general sense.
On top of that, easy, long, tempo runs and intervals makes for keeping the training interesting.... variety is the spice of life.
Wear a sports bra under your tri suit which you wear under your wetsuit. No changing required as such. Just remove your wetsuit etc and apply what you require in bike gear e.g. helmet (a must), socks (if you wish-I dont bother up to Oly distance), shoes, and any extra potential things such as gloves or extra layers. You will dry quickly.
Swim lessons will definitely help but make sure nearer the time you get OW practice as well.
Try and maybe do a shorter event beforehand as well to get used to the running of things.